Not yet updated by vendor.$$$$$$Refer - https://docs.mattermost.com/about/desktop-app-changelog.html

Release v5.12$$$Release day: 2025-05-16$$$$$$Download Binaries: Mattermost Desktop on GitHub$$$$$$Note$$$$$$Mattermost Desktop App v5.12.0 contains a medium severity level security fix. Upgrading is highly recommended. Details will be posted on our security updates page 30 days after release as per the Mattermost Responsible Disclosure Policy.$$$$$$Compatibility$$$Desktop App is supported on any currently supported Mattermost server version.$$$$$$Updated Chromium minimum supported version to 134+.$$$$$$Improvements$$$All Platforms$$$Refreshed the Settings modal designs.$$$$$$Refreshed all built-in dialogs with new designs.$$$$$$Added a changelog link for when the app auto-updates.$$$$$$Updated the certificate error message.$$$$$$Removed bootstrap and dependencies.$$$$$$Architectural Changes$$$Major version upgrade of Electron to 35.2.0. Electron is the underlying technology used to build the Desktop App.$$$$$$Bug Fixes$$$All Platforms$$$Fixed an issue where server loading was blocked on contact with each configured server.$$$$$$Open Source Components$$$Added @floating-ui/react to https://github.com/mattermost/desktop.$$$$$$Known Issues$$$Sometimes the app will not restart after an auto-update. This is normal; and if this occurs the app can be safely launched manually.$$$$$$Sometimes during installation you may see this message: Warning 1946. Property System.AppUserModel.ID for shortcut Mattermost.Ink could not be set. This message can be safely ignored.$$$$$$Users seeing an endless “Loading…” screen when attempting to log in to the app may need to manually delete their cache directory. For macOS it is located in /Users/<username>/Library/Containers/Mattermost/Data/Library/Application Support/Mattermost; for Windows in Users/<username>/AppData/Roaming/Mattermost and for Linux in ~/config/Mattermost (where ~ is the home directory).$$$$$$On Linux; a left-click on the Mattermost tray icon doesn’t open the app window but opens the tray menu.$$$$$$Crashes might be be experienced in some Linux desktop clients due to an upstream bug in the libnotifyapp library. A recommended workaround is to disable the Mattermost system tray icon via Desktop Settings.$$$$$$On apps using GPO configurations; when adding a second server tab; it’s possible to drag and drop tabs; but they’ll jump back to the original position when releasing the mouse.$$$$$$Contributors$$$devinbinnie; j0794.

v5.10.2; released 2024-12-17$$$Fixed an issue where the new MSI installer would not uninstall versions before v5.9 installed via MSI MM-61994.$$$Fixed an issue where the MSI kept auto-update on for per-machine installation MM-62029.$$$Fixed a potential error thrown by the MSI when trying to uninstall the EXE MM-60416.$$$Fixed an issue where minimizing on Linux would cause the window to re-appear immediately MM-60233.$$$Added support for downgrading using the MSI installer MM-62196.$$$Fixed an issue where the application would not focus the browser window when opening an external link MM-61406.$$$Upgraded to Electron v33.2.0.

v5.8.1; released 2024-06-13$$$$$$Fixed an issue where notifications would not show on macOS in certain cases.$$$$$$Fixed an issue where clicking a notification would clear unreads for the wrong channel.$$$$$$Fixed an issue where scaled monitors in multi-monitor setups may have caused the window to be opened across two screens.$$$$$$Fixed an issue with Do Not Disturb mode on Windows.

Release v5.8$$$Release Date: May 16; 2024$$$$$$Download Binaries: Mattermost Desktop on GitHub$$$$$$Note$$$$$$Mattermost v5.8.0 contains low to medium severity level security fixes. Upgrading is highly recommended. Details will be posted on our security updates page 30 days after release as per the Mattermost Responsible Disclosure Policy.$$$$$$Compatibility$$$Desktop App is supported on any currently supported Mattermost server version.$$$$$$Updated Chromium minimum supported version to 122+.$$$$$$Improvements$$$All Platforms$$$Moved the Settings window into a new modal.$$$$$$Disabled the --inspect tag.$$$$$$Architectural Changes$$$Minor version upgrade of Electron to 29.3.0. Electron is the underlying technology used to build the Desktop App.$$$$$$Bug Fixes$$$macOS$$$Fixed an issue for macOS 13+ users on the Mac App Store build where the OS-level Do Not Disturb user status was not respected.$$$$$$Fixed the settings window disappearing on macOS when dragged to another monitor.$$$$$$All Platforms$$$Fixed an issue where removing a server did not clear mentions.$$$$$$Fixed an issue where right-clicking on Save Image crashed the app.$$$$$$Fixed an issue where typing in the local server followed by a port would trip up the URL validation.$$$$$$Fixed an issue where restoring the window from the tray icon could cause a strange state if the window was previously maximized.$$$$$$Fixed the permission prompt to Deny on closing the dialog.$$$$$$Open Source Components$$$Added and removed several open source components at https://github.com/mattermost/desktop.$$$$$$Known Issues$$$Desktop App Windows 10: The taskbar might not flash on receipt of a new message when the setting is enabled MM-58087.$$$$$$Users seeing an endless “Loading…” screen when attempting to log in to the app may need to manually delete their cache directory. For MacOS it is located in /Users/<username>/Library/Containers/Mattermost/Data/Library/Application Support/Mattermost; for Windows in Users/<username>/AppData/Roaming/Mattermost and for Linux in ~/config/Mattermost (where ~ is the home directory).$$$$$$On Linux; a left-click on the Mattermost tray icon doesn’t open the app window but opens the tray menu.$$$$$$Crashes might be be experienced in some Linux desktop clients due to an upstream bug in the libnotifyapp library. A recommended workaround is to disable the Mattermost system tray icon via Desktop Settings.$$$$$$On apps using GPO configurations; when adding a second server tab; it’s possible to drag and drop tabs; but they’ll jump back to the original position when releasing the mouse.$$$$$$Contributors$$$devinbinnie; toninis; yasserfaraazkhan.

Release v5.6?$$$Release Date: December 15; 2023$$$$$$Download Binaries: Mattermost Desktop on GitHub$$$$$$Compatibility?$$$Desktop App is supported on any currently supported Mattermost server version.$$$$$$Updated Chromium minimum supported version to 118+.$$$$$$Improvements?$$$All Platforms?$$$Added Vietnamese as a new language (Beta).$$$$$$Removed gconf dependency for Debian/Ubuntu.$$$$$$Stopped auto-opening Boards/Playbooks tabs.$$$$$$Architectural Changes?$$$Major version upgrade of Electron to v27.0.2. Electron is the underlying technology used to build the Desktop App.$$$$$$Bug Fixes?$$$All Platforms?$$$Fixed an issue where some notifications did not navigate to the channel.$$$$$$Set the category for the main menu correctly for installations with Debian package.$$$$$$Fixed an issue where servers on a subpath could not grant the media permission.$$$$$$Fixed an issue where users could not fullscreen embedded videos.$$$$$$Fixed a deep linking issue for servers with subpaths.$$$$$$Fixed an issue where the “session expired” badge wasn’t displayed.$$$$$$macOS?$$$Fixed an issue where clicking on a link to an unregistered protocol on macOS would cause the app to crash.$$$$$$Open Source Components?$$$Added electron-extension-installer and node-gyp to https://github.com/mattermost/desktop.$$$$$$Known Issues?$$$Users seeing an endless “Loading…” screen when attempting to log in to the app may need to manually delete their cache directory. For MacOS it is located in /Users/<username>/Library/Containers/Mattermost/Data/Library/Application Support/Mattermost; for Windows in Users/<username>/AppData/Roaming/Mattermost and for Linux in ~/config/Mattermost (where ~ is the home directory).$$$$$$On Linux; a left-click on the Mattermost tray icon doesn’t open the app window but opens the tray menu.$$$$$$Crashes might be be experienced in some Linux desktop clients due to an upstream bug in the libnotifyapp library. A recommended workaround is to disable the Mattermost system tray icon via Desktop Settings.$$$$$$On apps using GPO configurations; when adding a second server tab; it’s possible to drag and drop tabs; but they’ll jump back to the original position when releasing the mouse.$$$$$$Contributors?$$$BaumiCoder; ctlaltdieliet; devinbinnie; larkox.

v5.5.1; released 2023-10-03$$$$$$Mattermost v5.5.1 contains low severity level security fixes. Upgrading is highly recommended. Details will be posted on our security updates page 30 days after release as per the Mattermost Responsible Disclosure Policy.$$$$$$Upgraded to Electron v26.2.1; which mitigates CVE-2023-4863 of the third-party library libwebp.$$$$$$Fixed an issue where logging was stuck to info level.$$$$$$Fixed an issue where the downloads dropdown would not open on auto-update notification.

Release v5.4; Release Day: June 19; 2023$$$$$$Compatibility:$$$$$$Desktop App is supported on any supported Extended Support Release or a newer Mattermost server version.$$$$$$Updated Chromium minimum supported version to 112+.$$$$$$Improvements$$$$$$All Platforms$$$Improved URL validation and the add/edit server experience.$$$$$$Made ExtraBar dark when using dark mode.$$$$$$Improved the tray icon click behaviour across operating systems.$$$$$$Architectural Changes$$$Major version upgrade of Electron to v24.3.1. Electron is the underlying technology used to build the Desktop App.$$$$$$Bug Fixes$$$All Platforms$$$Calls: Fixed duplicate desktop notifications when calls popout was open.$$$$$$Fixed an issue where YubiKeys did not work on the MAS build.$$$$$$Fixed an issue where servers on subpaths would not properly navigate to external URLs on the same domain.$$$$$$Fixed an issue where spellcheck highlighting would persist after text was deleted.$$$$$$Fixed an issue for the MAS build where the default downloads directory would be invalid after upgrade.$$$$$$Fixed an issue where the default download location did not respect XDG_DOWNLOAD_DIR where it was set.$$$$$$Fixed an issue where the popup window was not refocused if it already existed.$$$$$$Known Issues$$$Mattermost is not detected in the Add Server screen if the server has plugins disabled MM-53294.$$$$$$When running “Run Diagnostics” from the Help menu; the app crashes MM-53295.$$$$$$Users seeing an endless “Loading…” screen when attempting to log in to the app may need to manually remove their cache directory. For MacOS it is located in /Users/<username>/Library/Containers/Mattermost/Data/Library/Application Support/Mattermost and for Windows it is located in Users/<username>/AppData/Roaming/Mattermost.$$$$$$On Linux; a left-click on the Mattermost tray icon doesn’t open the app window but opens the tray menu.$$$$$$Crashes might be be experienced in some Linux desktop clients due to an upstream bug in the libnotifyapp library. A recommended workaround is to disable the Mattermost system tray icon via Desktop Settings.$$$$$$On apps using GPO configurations; when adding a second server tab; it’s possible to drag and drop tabs; but they’ll jump back to the original position when releasing the mouse.

v5.3.1; released 2023-04-04$$$$$$Calls: fixed an issue where; after opening the calls popout then closing it (without leaving the call); subsequent clicks would cause a crash.

5.2.2; released 2022-12-06$$$$$$Added ARM64 build (beta) for Windows/Linux.$$$$$$Fixed an issue on Windows installers where the onboarding screen was displayed even when there was a preconfigured server list MM-48079.$$$$$$Fixed an issue where a crash could occur when a download list included corrupt data MM-48483.$$$$$$Fixed an issue where AppImageLauncher still created a bad shortcut that caused the app not to launch MM-48557.$$$$$$Fixed an issue where notifications were not displayed on Windows v8 and v8.1 MM-48397.$$$$$$Fixed an issue where users could get stuck after finished the Getting Started flow MM-48682.$$$$$$Fixed an issue where the window resize did not work on some windows machines MM-48574.$$$$$$Fixed an issue on Windows where the three-dot menu remained focused after clicking elsewhere MM-46424.

v5.2.1; released 2022-11-15$$$$$$Fixed an issue where the onboarding screen was still displayed even when there was a preconfigured server list MM-48079.$$$$$$Fixed an issue where the default downloads location was not set on macOS MM-48167.$$$$$$Fixed an issue where users were able to edit or remove a pre-configured server provided by GPO on Windows MM-48184.$$$$$$Fixed an issue where the tray icon colour on Windows didn’t obey the setting MM-48080.$$$$$$

Fixed an issue where an Operating System could register Mattermost as the default web browser / mail app.$$$$$$Fixed an issue where the download notification showed the wrong file name.$$$$$$Fixed an issue where it was possible to drag the Minimize/Close buttons.$$$$$$Fixed an issue where servers were not forced to update their configuration using the configured SiteURL value if available.$$$$$$Fixed an issue where a misleading error message from a remote certificate would imply that the Mattermost server had an issue.$$$$$$Fixed an issue where users still received notifications when their status was set to Do Not Disturb.$$$$$$Fixed an issue where users could not replace files in the Downloads folder.$$$$$$Fixed improper reporting of app version when the --version or -v command-line flags were passed.$$$$$$Fixed an issue where MAS users couldn’t easily replace files.

Upgraded to Electron v18.3.0.$$$$$$Fixed an issue where a channel name matching the server subpath would not be navigable.$$$$$$Fixed an issue where the hideOnStart setting didn’t work.$$$$$$Fixed an issue where the certificate error dialog box would reappear infinitely.$$$$$$Fixed an issue where the first client certificate could not be selected.$$$$$$Restored Windows ZIP builds.