Changelog

A new GA release for the Linux Cloudflare One Client is now available on the stable releases downloads page.

This hotfix addresses an issue building trusted certificate chains.

A new Beta release for the Windows Cloudflare One Client is now available on the beta releases downloads page.

This release includes the following highlights:

• Added automatic endpoint selection for Global Acceleration. When Global Acceleration is enabled for an organization, the client connects to the Global Acceleration endpoints while the device is in the acceleration region and to the standard anycast endpoints otherwise, and reconnects when a network change moves the device between them without requiring action from the user. The Connectivity page shows which tunnel and API endpoints are in use, and users who are allowed to override the selection can choose endpoints in Settings.
• Added protection against unauthorized modification or uninstallation of the Cloudflare One Client. When enabled, the user will be asked to provide an administrator-generated code when trying to uninstall the client, which will otherwise be blocked.
• The client now shows a banner when the network limits the tunnel MTU to a degraded or critically low value. The banner clears when the MTU recovers or the client disconnects.

Additional Changes and improvements

• The client now applies tunnel MTUs between 1147 and 1199 bytes measured by Path MTU Discovery. Previously the client ignored these values and kept a larger MTU, which could drop larger packets on networks such as mobile hotspots while the client showed as connected.
• When Path MTU Discovery is enabled, the client now accepts larger packets from Cloudflare instead of limiting them to the size it uses for its own outbound packets.
• Access reauthentication requests now trust certificates in the operating system's certificate store, so reauthentication works on networks that perform TLS inspection.
• For Zero Trust deployments, the client now records a traceroute of the network path outside the tunnel when the tunnel degrades or fails to connect. warp-diag includes the same trace.
• warp-diag now includes redacted copies of the deployed MDM files and the names, but not the values, of stored registration secrets. It reports a QUIC path MTU only when one was measured.
• Added the MDM parameters mdm_file_debounce_secs (1–60) and mdm_file_unavailable_debounce_secs (0–300), which set how long the client waits before applying a changed MDM file and before acting on a missing or unreadable one.
• The consumer client home screen now shows when the connection is post-quantum encrypted.
• The client UI no longer starts WMIC or PowerShell processes to collect memory information for crash reports.
• Fixed a hostname-based split tunnel entry not taking effect until the next reconnect after its firewall rule failed to apply.
• Fixed the client window appearing blank or white after an upgrade, at sign-in, after waking from sleep, or after a display change.
• Fixed the client service restarting when a firewall update for captive portal detection stalled while the device was asleep.
• Fixed the client getting stuck in a disconnected state on Windows on Arm devices because leftover tunnel adapters were not removed.
• Fixed the client being unable to connect after an upgrade, downgrade, and upgrade that switched between consumer and Zero Trust registrations. The client now clears the mismatched registration so the user can register again.
• Fixed the client UI looking for one of its libraries in a directory that standard users can create before looking in the installation directory.
• Fixed warp-cli registration license reporting an error on slow networks even though the license was applied, which left the client registered to a WARP+ account it did not recognize.
• Fixed Digital Experience Monitoring (DEX) results being reported with timestamps offset from the actual time after the system clock was corrected.
• Added the MDM parameters managed_network_probe_interval_secs (30–300, default 30) and managed_network_probe_count (0 disables probing, 1–10, or -1 to keep probing until a managed network is found; default 1). After a registration or network change finds no managed network, the client now rechecks, so a device doesn't stay on the default profile because of a transient connection failure. Set the count to 0 to keep the previous behavior.
• In proxy mode for Zero Trust, the client now sends hostnames from HTTP/HTTPS and SOCKS5 requests to Cloudflare for resolution instead of resolving them on the device.
• When the app cannot reach the client service, the home screen now says why (service not running, not accepting connections, not responding, or connection dropped and reconnecting). It shows an error code and a Learn more link instead of "IPC error".
• Fixed Windows resetting the Wi-Fi adapter after sign-in or a Wi-Fi restart when the client's firewall rules in Exclude split tunnel mode blocked Windows network connectivity checks. The client now allows those checks.
• Fixed the installer asking the user to close running applications during an upgrade, downgrade or uninstall because other programs loaded the client's Visual C++ runtime libraries through the system PATH. The client now loads these libraries from a private folder so that closing other applications is unnecessary.

Known issues

A Windows DNS client regression may cause connectivity check failures on systems containing large hosts files. While our client includes a mitigation for this issue, users may still experience reduced DNS performance and connectivity check failures.

For Zero Trust documentation please see: https://developers.cloudflare.com/cloudflare-one/team-and-resources/devices/cloudflare-one-client/ For Consumer documentation please see: https://developers.cloudflare.com/warp-client/

A new Beta release for the macOS Cloudflare One Client is now available on the beta releases downloads page.

This release includes the following highlights:

• macOS 15.0 is now the minimum supported version. This release does not run on macOS 14.
• Added automatic endpoint selection for Global Acceleration. When Global Acceleration is enabled for an organization, the client connects to the Global Acceleration endpoints while the device is in the acceleration region and to the standard anycast endpoints otherwise, and reconnects when a network change moves the device between them without requiring action from the user.. The Connectivity page shows which tunnel and API endpoints are in use, and users who are allowed to override the selection can choose endpoints in Settings.
• The client now shows a banner when the network limits the tunnel MTU to a degraded or critically low value. The banner clears when the MTU recovers or the client disconnects.

Additional Changes and improvements

• The client now applies tunnel MTUs between 1147 and 1199 bytes measured by Path MTU Discovery. Previously the client ignored these values and kept a larger MTU, which could drop larger packets on networks such as mobile hotspots while the client showed as connected.
• When Path MTU Discovery is enabled, the client now accepts larger packets from Cloudflare instead of limiting them to the size it uses for its own outbound packets.
• Access reauthentication requests now trust certificates in the operating system's certificate store, so reauthentication works on networks that perform TLS inspection.
• For Zero Trust deployments, the client now records a traceroute of the network path outside the tunnel when the tunnel degrades or fails to connect. warp-diag includes the same trace.
• warp-diag now includes redacted copies of the deployed MDM files and reports a QUIC path MTU only when one was measured.
• The consumer client home screen now shows when the connection is post-quantum encrypted.
• Fixed a managed registration being removed when the MDM configuration file was briefly missing or unreadable. The client now keeps the last applied policy for 20 seconds after the file becomes unavailable. The new MDM parameters mdm_file_debounce_secs (1–60) and mdm_file_unavailable_debounce_secs (0–300) change how long the client waits before applying a changed file and before acting on a missing one.
• Fixed a hostname-based split tunnel entry not taking effect until the next reconnect after its firewall rule failed to apply.
• Fixed split tunnel updates for hostname-based entries failing when the client tried to remove a route that macOS had not installed.
• Fixed the client UI not showing onboarding on first launch while a notification permission request was pending.
• Fixed warp-cli registration license reporting an error on slow networks even though the license was applied, which left the client registered to a WARP+ account it did not recognize.
• Fixed Digital Experience Monitoring (DEX) results being reported with timestamps offset from the actual time after the system clock was corrected.
• Fixed an upgrade sometimes leaving the client without a running service when the previous service was slow to stop. The installer now waits up to 10 seconds for the old service to be removed before starting the new one.
• Fixed the OS version detail stored for a device keeping an outdated value, including the text "Usage: sw_vers…" reported by client versions 2023.5.587.1 through 2024.12.760.0. The client now clears the value the next time it connects.
• Added the MDM parameters managed_network_probe_interval_secs (30–300, default 30) and managed_network_probe_count (0 disables probing, 1–10, or -1 to keep probing until a managed network is found; default 1). After a registration or network change finds no managed network, the client now rechecks, so a device doesn't stay on the default profile because of a transient connection failure. Set the count to 0 to keep the previous behavior.
• In proxy mode for Zero Trust, the client now sends hostnames from HTTP/HTTPS and SOCKS5 requests to Cloudflare for resolution, instead of resolving them on the device.
• When the app cannot reach the client service, the home screen now says why (service not running, not accepting connections, not responding, or connection dropped and reconnecting). It shows an error code and a Learn more link instead of "IPC error".

Known issues

None.

For Zero Trust documentation please see: https://developers.cloudflare.com/cloudflare-one/team-and-resources/devices/cloudflare-one-client/ For Consumer documentation please see: https://developers.cloudflare.com/warp-client/

A new GA release for the Windows Cloudflare One Client is now available on the stable releases downloads page.

This hotfix addresses an issue building trusted certificate chains.

A new GA release for the macOS Cloudflare One Client is now available on the stable releases downloads page.

This hotfix addresses an issue building trusted certificate chains.

A new GA release for the Windows Cloudflare One Client is now available on the stable releases downloads page.

This hotfix addresses an issue building trusted certificate chains.

A new GA release for the macOS Cloudflare One Client is now available on the stable releases downloads page.

This hotfix addresses an issue building trusted certificate chains.

A new GA release for the Linux Cloudflare One Client is now available on the stable releases downloads page.

This hotfix addresses an issue building trusted certificate chains.

A new GA release for the Windows Cloudflare One Client is now available on the stable releases downloads page.

This hotfix resolves an issue where the client could repeatedly disconnect and reconnect when a split tunnel configuration with hostname-based entries failed to apply.

A new GA release for the macOS Cloudflare One Client is now available on the stable releases downloads page.

This hotfix resolves an issue where the client could repeatedly disconnect and reconnect when a split tunnel configuration with hostname-based entries failed to apply.

A new GA release for the Linux Cloudflare One Client is now available on the stable releases downloads page.

This hotfix resolves an issue where the client could repeatedly disconnect and reconnect when a split tunnel configuration with hostname-based entries failed to apply.

A new GA release for the macOS Cloudflare One Client is now available on the stable releases downloads page.

This release includes the following highlights:

• Traffic to split tunnel excluded resources is no longer briefly blocked while the client is connecting or reconnecting. The client now keeps its learned split tunnel configuration across reconnects.
• Support for routing non-RFC 1918 local IPv4 networks through the tunnel when unrestricted LAN inclusion is enabled by policy or MDM.
• Faster connects and lower memory use. The hosts file is now read once and shared across the client’s DNS resolvers instead of being reloaded by each one.

Additional changes and improvements

• Improved reauthentication reliability and fixed an issue where a reauthentication could force a new registration.
• Improved client reaction to the current network lowering its MTU.
• Improved DNS reliability on networks with lower MTUs by clamping the TCP maximum segment size (MSS) for DNS-over-HTTPS connections sent through the tunnel.
• Individual DNS-over-HTTPS queries now time out instead of hanging when the upstream server stops responding.
• Improved API reliability by retrying requests dropped when reusing pooled connections.
• Added an MDM setting to prefer IPv4 when resolving hostnames in proxy mode. The setting is off by default.
• Fixed the client reconnecting while Emergency Disconnect was active after switching organizations or re-registering.
• Fixed the client being unable to connect after an upgrade when its stored registration credentials no longer matched its configuration.
• Fixed the client service restarting unexpectedly when it was slow to respond, such as after waking from sleep.
• Fixed Extra Logging failing to capture packets across all interfaces.
• Fixed an issue that could prevent remote diagnostics from completing.
• Fixed DNS connectivity checks failing on IPv6-only networks.
• Fixed the client service exiting when its route-monitoring socket was closed after sleep or wake.
• Fixed DNS enforcement checks making the client service unresponsive on systems with large routing tables.
• Fixed slow captive portal checks causing the client service to become unresponsive or restart while connecting.
• Fixed a race when switching tunnel protocols during key rotation that could prevent WireGuard from connecting.
• Fixed the client continuing to report “No network” after a successful manual disconnect.
• Fixed a client UI crash that could occur when the daemon connection was reset during an IPC request.
• Fixed a startup crash when date formatting data for the system locale had not yet loaded.

Known issues

• None

A new GA release for the Windows Cloudflare One Client is now available on the stable releases downloads page.

This release includes the following highlights:

• Traffic to split tunnel excluded resources is no longer briefly blocked while the client is connecting or reconnecting. The client now keeps its learned split tunnel configuration across tunnel reconnections.
• Support for routing non-RFC 1918 local IPv4 networks through the tunnel when unrestricted LAN inclusion is enabled by policy or MDM.
• Improved connection reliability on devices with very large hosts files. The client now detects a large hosts file, allows more time for its initial DNS check, and shows a banner letting the user know that connecting may take longer.
• Faster tunnel reconnections and lower memory use. The hosts file is now read once and shared across the client’s DNS resolvers instead of being reloaded by each one.
• A service recovery mechanism, backed by a Windows scheduled task, now starts the client service on system unlock if it is not already running. This is enabled by default.

Additional changes and improvements

• Improved reauthentication reliability and fixed an issue where a reauthentication could force a new registration.
• Improved client reaction to the current network lowering its MTU.
• Improved DNS reliability on networks with lower MTUs by clamping the TCP maximum segment size (MSS) for DNS-over-HTTPS connections sent through the tunnel.
• Individual DNS-over-HTTPS queries now time out instead of hanging when the upstream server stops responding.
• Improved API reliability by retrying requests dropped when reusing pooled connections.
• Added an MDM setting to prefer IPv4 when resolving hostnames in proxy mode. The setting is off by default.
• The client no longer requires the Windows WLAN AutoConfig service to be running.
• Fixed the client reconnecting while Emergency Disconnect was active after switching organizations or re-registering.
• Fixed the client being unable to connect after an upgrade when its stored registration credentials no longer matched its configuration.
• Fixed the client service restarting unexpectedly when it was slow to respond, such as after waking from sleep.
• Fixed the client service failing to restart after an unexpected termination.
• Fixed the client UI getting stuck in a connecting state after sleep and wake even though the tunnel was connected.
• Fixed slow captive portal checks causing the client service to become unresponsive or restart while connecting.
• Fixed a race when switching tunnel protocols during key rotation that could prevent WireGuard from connecting.
• Fixed the client continuing to report “No network” after a successful manual disconnect.
• Fixed Digital Experience Monitoring (DEX) HTTP tests failing TLS validation.
• Fixed latency spikes and traffic interruptions during TPM-backed API authentication when hardware-backed registration is enabled.
• Fixed trailing whitespace in BIOS serial numbers causing serial-number and client-certificate device posture checks to fail.
• Fixed the client UI crashing at startup when it could not write to the Windows registry.
• Fixed a client UI crash that could occur when the daemon connection was reset during an IPC request.
• Fixed a startup crash when date formatting data for the system locale had not yet loaded.

Known issues

• A Windows DNS client regression may cause connectivity check failures on systems containing large hosts files. While this release includes a fix to mitigate this issue, users may still experience reduced DNS performance and connectivity check failures.

A new GA release for the Linux Cloudflare One Client is now available on the stable releases downloads page.

This release includes the following highlights:

• Traffic to split tunnel excluded resources is no longer briefly blocked while the client is connecting or reconnecting. The client now keeps its learned split tunnel configuration across reconnects.
• Support for routing non-RFC 1918 local IPv4 networks through the tunnel when unrestricted LAN inclusion is enabled by policy or MDM.
• Faster tunnel reconnections and lower memory use. The hosts file is now read once and shared across the client’s DNS resolvers instead of being reloaded by each one.
• Added an MDM setting to prefer IPv4 when resolving hostnames in proxy mode. The setting is off by default.

Additional changes and improvements

• Improved reauthentication reliability and fixed an issue where a reauthentication could force a new registration.
• Improved client reaction to the current network lowering its MTU.
• Improved DNS reliability on networks with lower MTUs by clamping the TCP maximum segment size (MSS) for DNS-over-HTTPS connections sent through the tunnel.
• Individual DNS-over-HTTPS queries now time out instead of hanging when the upstream server stops responding.
• Improved API reliability by retrying requests dropped when reusing pooled connections.
• Fixed the client reconnecting while Emergency Disconnect was active after switching organizations or re-registering.
• Fixed the client being unable to connect after an upgrade when its stored registration credentials no longer matched its configuration.
• Fixed the client service restarting unexpectedly when it was slow to respond, such as after waking from sleep.
• Fixed the client window not appearing on first launch after a fresh install on RHEL 10.
• Fixed duplicate WARP routing policy rules accumulating on reconnect.
• Fixed slow captive portal checks causing the client service to become unresponsive or restart while connecting.
• Fixed a race when switching tunnel protocols during key rotation that could prevent WireGuard from connecting.
• Fixed the client continuing to report “No network” after a successful manual disconnect.
• Fixed a client UI crash that could occur when the daemon connection was reset during an IPC request.
• Fixed a startup crash when date formatting data for the system locale had not yet loaded.

Known issues

• When in DNS Only mode, the client may send DNS queries for names that are configured for Local Domain Fallback to the encrypted DNS server instead of falling back to the system configuration. Local Domain Fallback works as expected in other client modes.

A new Beta release for the Windows Cloudflare One Client is now available on the beta releases downloads page.

This beta release includes the following changes and improvements:

• Fixed an issue that could briefly block traffic to split tunnel excluded resources while the client was connecting or reconnecting.
• Improved reauthentication reliability and fixed an issue where a reauthentication could force a new registration.
• Improved client reaction to the current network lowering its MTU.
• Added support for routing non-RFC 1918 local IPv4 networks through the WARP tunnel when unrestricted LAN inclusion is enabled by policy or MDM.
• Improved DNS reliability on networks with lower MTUs by clamping the TCP maximum segment size (MSS) for DNS-over-HTTPS connections sent through the tunnel.
• Improved API reliability by retrying requests dropped when reusing pooled connections.
• The client no longer requires the Windows WLAN AutoConfig service to be running.
• Implemented a service recovery mechanism backed by Windows scheduler task to start WARP service on system unlock if not already started.
• Fixed slow captive portal checks causing the client service to become unresponsive or restart while connecting.
• Fixed a race when switching tunnel protocols during key rotation that could prevent WireGuard from connecting.
• Fixed the client continuing to report 'No network' after a successful manual disconnect.
• Fixed Digital Experience Monitoring (DEX) HTTP tests failing TLS validation on Windows.
• Fixed the client UI crashing at startup when it could not write to the Windows registry.
• Fixed latency spikes and traffic interruptions during TPM-backed API authentication when hardware-backed registration is enabled.
• Fixed trailing whitespace in BIOS serial numbers causing serial-number and client-certificate device posture checks to fail.
• Fixed a client UI crash that could occur when the daemon connection was reset during an IPC request.
• Fixed a startup crash when date formatting data for the system locale had not yet loaded.

Known issues

• None

For Zero Trust documentation, see: https://developers.cloudflare.com/cloudflare-one/team-and-resources/devices/cloudflare-one-client/ For Consumer documentation, see: https://developers.cloudflare.com/warp-client/

A new Beta release for the Windows Cloudflare One Client is now available on the beta releases downloads page.

This beta release includes the following changes and improvements:

• Fixed an issue that could briefly block traffic to split tunnel excluded resources while the client was connecting or reconnecting.
• Improved reauthentication reliability and fixed an issue where a reauthentication could force a new registration.
• Improved client reaction to the current network lowering its MTU.
• Added support for routing non-RFC 1918 local IPv4 networks through the WARP tunnel when unrestricted LAN inclusion is enabled by policy or MDM.
• Improved DNS reliability on networks with lower MTUs by clamping the TCP maximum segment size (MSS) for DNS-over-HTTPS connections sent through the tunnel.
• Improved API reliability by retrying requests dropped when reusing pooled connections.
• The client no longer requires the Windows WLAN AutoConfig service to be running.
• Implemented a service recovery mechanism backed by Windows scheduler task to start WARP service on system unlock if not already started.
• Fixed slow captive portal checks causing the client service to become unresponsive or restart while connecting.
• Fixed a race when switching tunnel protocols during key rotation that could prevent WireGuard from connecting.
• Fixed the client continuing to report 'No network' after a successful manual disconnect.
• Fixed Digital Experience Monitoring (DEX) HTTP tests failing TLS validation on Windows.
• Fixed the client UI crashing at startup when it could not write to the Windows registry.
• Fixed latency spikes and traffic interruptions during TPM-backed API authentication when hardware-backed registration is enabled.
• Fixed trailing whitespace in BIOS serial numbers causing serial-number and client-certificate device posture checks to fail.
• Fixed a client UI crash that could occur when the daemon connection was reset during an IPC request.
• Fixed a startup crash when date formatting data for the system locale had not yet loaded.

Known issues

• None

A new Beta release for the macOS Cloudflare One Client is now available on the beta releases downloads page.

This beta release includes the following changes and improvements:

• Fixed an issue that could briefly block traffic to split tunnel excluded resources while the client was connecting or reconnecting.
• Improved reauthentication reliability and fixed an issue where a reauthentication could force a new registration.
• Improved client reaction to the current network lowering its MTU.
• Added support for routing non-RFC 1918 local IPv4 networks through the WARP tunnel when unrestricted LAN inclusion is enabled by policy or MDM.
• Improved DNS reliability on networks with lower MTUs by clamping the TCP maximum segment size (MSS) for DNS-over-HTTPS connections sent through the tunnel.
• Improved API reliability by retrying requests dropped when reusing pooled connections.
• Fixed Extra Logging failing to capture packets across all interfaces.
• Fixed an issue that could prevent remote diagnostics from completing.
• Fixed DNS connectivity checks failing on IPv6-only networks.
• Fixed the client service exiting when its route-monitoring socket was closed after sleep or wake.
• Fixed DNS enforcement checks making the client service unresponsive on systems with large routing tables.
• Fixed slow captive portal checks causing the client service to become unresponsive or restart while connecting.
• Fixed a race when switching tunnel protocols during key rotation that could prevent WireGuard from connecting.
• Fixed the client continuing to report 'No network' after a successful manual disconnect.
• Fixed a client UI crash that could occur when the daemon connection was reset during an IPC request.
• Fixed a startup crash when date formatting data for the system locale had not yet loaded.

Known issues

• None

A new Beta release for the macOS Cloudflare One Client is now available on the beta releases downloads page.

This beta release includes the following changes and improvements:

• Fixed an issue that could briefly block traffic to split tunnel excluded resources while the client was connecting or reconnecting.
• Improved reauthentication reliability and fixed an issue where a reauthentication could force a new registration.
• Improved client reaction to the current network lowering its MTU.
• Added support for routing non-RFC 1918 local IPv4 networks through the WARP tunnel when unrestricted LAN inclusion is enabled by policy or MDM.
• Improved DNS reliability on networks with lower MTUs by clamping the TCP maximum segment size (MSS) for DNS-over-HTTPS connections sent through the tunnel.
• Improved API reliability by retrying requests dropped when reusing pooled connections.
• Fixed Extra Logging failing to capture packets across all interfaces.
• Fixed an issue that could prevent remote diagnostics from completing.
• Fixed DNS connectivity checks failing on IPv6-only networks.
• Fixed the client service exiting when its route-monitoring socket was closed after sleep or wake.
• Fixed DNS enforcement checks making the client service unresponsive on systems with large routing tables.
• Fixed slow captive portal checks causing the client service to become unresponsive or restart while connecting.
• Fixed a race when switching tunnel protocols during key rotation that could prevent WireGuard from connecting.
• Fixed the client continuing to report 'No network' after a successful manual disconnect.
• Fixed a client UI crash that could occur when the daemon connection was reset during an IPC request.
• Fixed a startup crash when date formatting data for the system locale had not yet loaded.

Known issues

• None

A new Beta release for the Windows Cloudflare One Client is now available on the beta releases downloads page.

This beta release includes the following changes and improvements:

• Fixed an issue that could briefly block traffic to split tunnel excluded resources while the client was connecting or reconnecting.
• Improved reauthentication reliability and fixed an issue where a reauthentication could force a new registration.
• Improved client reaction to the current network lowering its MTU.
• Added support for routing non-RFC 1918 local IPv4 networks through the WARP tunnel when unrestricted LAN inclusion is enabled by policy or MDM.
• Improved DNS reliability on networks with lower MTUs by clamping the TCP maximum segment size (MSS) for DNS-over-HTTPS connections sent through the tunnel.
• Improved API reliability by retrying requests dropped when reusing pooled connections.
• The client no longer requires the Windows WLAN AutoConfig service to be running.
• Implemented a service recovery mechanism backed by Windows scheduler task to start WARP service on system unlock if not already started.
• Fixed slow captive portal checks causing the client service to become unresponsive or restart while connecting.
• Fixed a race when switching tunnel protocols during key rotation that could prevent WireGuard from connecting.
• Fixed the client continuing to report 'No network' after a successful manual disconnect.
• Fixed Digital Experience Monitoring (DEX) HTTP tests failing TLS validation on Windows.
• Fixed the client UI crashing at startup when it could not write to the Windows registry.
• Fixed latency spikes and traffic interruptions during TPM-backed API authentication when hardware-backed registration is enabled.
• Fixed trailing whitespace in BIOS serial numbers causing serial-number and client-certificate device posture checks to fail.
• Fixed a client UI crash that could occur when the daemon connection was reset during an IPC request.
• Fixed a startup crash when date formatting data for the system locale had not yet loaded.

Known issues

• None

A new Beta release for the macOS Cloudflare One Client is now available on the beta releases downloads page.

This beta release includes the following changes and improvements:

• Added support for routing non-RFC 1918 local IPv4 networks through the WARP tunnel when unrestricted LAN inclusion is enabled by policy or MDM.
• Improved DNS reliability on networks with lower MTUs by clamping the TCP maximum segment size (MSS) for DNS-over-HTTPS connections sent through the tunnel.
• Improved API reliability by retrying requests dropped when reusing pooled connections.
• Fixed Extra Logging failing to capture packets across all interfaces.
• Fixed an issue that could prevent remote diagnostics from completing.
• Fixed DNS connectivity checks failing on IPv6-only networks.
• Fixed the client service exiting when its route-monitoring socket was closed after sleep or wake.
• Fixed DNS enforcement checks making the client service unresponsive on systems with large routing tables.
• Fixed slow captive portal checks causing the client service to become unresponsive or restart while connecting.
• Fixed a race when switching tunnel protocols during key rotation that could prevent WireGuard from connecting.
• Fixed the client continuing to report 'No network' after a successful manual disconnect.
• Fixed a client UI crash that could occur when the daemon connection was reset during an IPC request.
• Fixed a startup crash when date formatting data for the system locale had not yet loaded.

Known issues

• None

A new Beta release for the Windows Cloudflare One Client is now available on the beta releases downloads page.

This beta release includes the following changes and improvements:

• Added support for routing non-RFC 1918 local IPv4 networks through the WARP tunnel when unrestricted LAN inclusion is enabled by policy or MDM.
• Improved DNS reliability on networks with lower MTUs by clamping the TCP maximum segment size (MSS) for DNS-over-HTTPS connections sent through the tunnel.
• Improved API reliability by retrying requests dropped when reusing pooled connections.
• The client no longer requires the Windows WLAN AutoConfig service to be running.
• Implemented a service recovery mechanism backed by Windows scheduler task to start WARP service on system unlock if not already started.
• Fixed slow captive portal checks causing the client service to become unresponsive or restart while connecting.
• Fixed a race when switching tunnel protocols during key rotation that could prevent WireGuard from connecting.
• Fixed the client continuing to report 'No network' after a successful manual disconnect.
• Fixed Digital Experience Monitoring (DEX) HTTP tests failing TLS validation on Windows.
• Fixed the client UI crashing at startup when it could not write to the Windows registry.
• Fixed latency spikes and traffic interruptions during TPM-backed API authentication when hardware-backed registration is enabled.
• Fixed trailing whitespace in BIOS serial numbers causing serial-number and client-certificate device posture checks to fail.
• Fixed a client UI crash that could occur when the daemon connection was reset during an IPC request.
• Fixed a startup crash when date formatting data for the system locale had not yet loaded.

Known issues

• None

A new GA release for the macOS Cloudflare One Client is now available on the stable releases downloads page.

This hotfix resolves an issue where a small but noticeable percentage of DNS queries fail across platforms.

A new GA release for the Windows Cloudflare One Client is now available on the stable releases downloads page.

Fixed a rare but critical issue where the client could fail to connect or switch organizations due to an invalid registration after switching installed client versions. Additionally, this hotfix resolves an issue where a small but noticeable percentage of DNS queries fail across platforms.

A new GA release for the Linux Cloudflare One Client is now available on the stable releases downloads page.

This hotfix resolves an issue where a small but noticeable percentage of DNS queries fail across platforms.

A new GA release for the Windows Cloudflare One Client is now available on the stable releases downloads page.

This release introduces multiple features from our previous beta release into stable release, including:

• When reauthentication is needed for any reason, the notifications are clearer and reduce the actions needed to get you back to work by redirecting to the browser for authentication instead of the app window when necessary.
• When a network is blocking or otherwise not supportive of HTTP/3, the client will learn and adapt by switching the order of fallback for that network by starting with HTTP/2 first and then trying HTTP/3 if needed. This reduces delays in time to connectivity when joining older or heavily filtered networks.

Additional changes and improvements

• Fixed a process leak in the Windows GUI that could exhaust system resources during IPC client-creation failures.
• Fixed being unable to switch organizations when the client was stuck in the "Device not in organization" state.
• Fixed an issue where Microsoft Defender would falsely flag the Cloudflare One Client installation as malicious when installing with Intune.
• Made the Windows domain-joined posture check more reliable.
• A DNS search domain parsing failure no longer prevents connection.
• Cloud icon now correctly reflects actual connection status instead of showing disconnected while fully connected.
• Fixed missing certificate error display due to a race condition.
• Fixed empty black window after transitioning from docked dual displays to undocked/internal display.

Known issues

• If a user upgrades to version 2026.7.1343.0, downgrades to an earlier version, re-registers, and then upgrades back to 2026.7.1343.0, the client might fail to connect or switch organizations. To resolve this issue, run warp-cli registration delete or warp-cli registration delete-all.