Mumble 1.6.870 (RC)
Posted on March 1, 2026 by Hartmnt
We are happy to announce the first release candidate of the next Mumble stable series: 1.6. This release is meant to iron out the last problems before the final product, so please make sure to report any issues you encounter in our GitHub issue tracker.
This version of Mumble comes with some significant changes for server administrators and power users, so please continue reading before migrating to the new version!
You can download the new version from our Downloads page or the GitHub release page or from within your Windows client or software package management system.
Changes to the database backend
Attention Server Administrators:
With Mumble 1.6 we are switching to a new database backend, including a new database schema. We include tested, automatic migration paths from your existing Mumble 1.5 database format to the new one. But, we nonetheless encourage you to back up your database before upgrading to 1.6.
Please also be aware that our automatic migration will stop and immediately roll back to the old database state as soon as any kind of error or ambiguous situation arises. This is to protect the integrity of your existing 1.5 database. In those cases you will need to manually fix the offending rows in your database before retrying the migration.
Changes to command line arguments
Attention Server Administrators:
Please be aware that we have introduced a new CLI parsing library. To comply with the existing
standards, we have changed the syntax and wording of (almost) all of our CLI options for mumble-server.
That means you will have to update any auxiliary files that are used to start up your Mumble server such as systemd services.
For example, -ini becomes --ini and -fg becomes --foreground. For more information, see
the --help text of the binary or the man pages.
Attention Power Users:
The CLI options for the Mumble client have changed, too. That means if you have created custom shortcuts or startup scripts, you may need to change these to accommodate the new options.
We have also introduced a few new options, such as --hidden and --skip-settings-backup-prompt to
supply even more automation possibilities.
Changelog
This is the full changelog for this release (changes relative to Mumble 1.5.857).
Client
- Added: Action to move back to previous channel(s) (#6674)
- Added: Adaptive push-to-talk/mute shortcut (#6848)
- Added: Added JACK transport recording options for external per-user audio capture/processing (#6043)
- Added: Allow choosing between banning by IP, certificate hash, or both (#7034)
- Added: Allow viewing images in separate window (#6870)
- Added: Automatically sync Mumble theme with OS color scheme by default (#6877)
- Added: Clear local mutes on Mumble restart (#6458)
- Added: CLI flag –hidden to start Mumble hidden in tray (#6466)
- Added: CLI flag –skip-settings-backup-prompt (#6887)
- Added: Disable Pipewire input stream while muted (#6366)
- Added: Display “talking muted” icon for users when effective volume is low (#6914)
- Added: Favorite button to icon bar and server drop down (#6873)
- Added: Fully rewrite tray icon implementation (#6466)
- Added: Improved connection failed dialog (#6911)
- Added: Introduce new and state-of-the-art command line argument parsing (#6243)
- Added: Listener attenuation (#6804)
- Added: Option to change TalkingUI background color (#6815)
- Added: Replace ReNameNoise with RNNoise version 0.2 (#6607)
- Added: Rolling connection quality stats to client information (#6683)
- Added: Shortcut to toggle positional audio (#6326)
- Added: Show architecture in About dialog (#6979)
- Changed: Only display “muted”/“deafened” message from users in own channel (#6922)
- Changed: Replace “Server Information” action with “Disconnect” in Toolbar (#6923)
- Changed: Switched to new logging framework (#6707)
- Changed: Switched to Qt6 from Qt5 (#6516)
- Changed: Version output now only contains the version (#6243)
- Fixed: Add missing “What’s This?” to record, comment and search actions (#6923)
- Fixed: Clarify that user and channel name validation is a server setting (#7091)
- Fixed: De-duplicate ban list client-side and server-side (#7034)
- Fixed: Do not abort processing sound data just because master volume is low (#6914)
- Fixed: Do not repeat sound notification while trying to reconnect to a server (#6919)
- Fixed: Explain and handle missing client database better (#7021)
- Fixed: Explain reasons for SSL errors better (#6594)
- Fixed: Freeze due to excessive analog input events (#7001)
- Fixed: Handle file access errors within CrashReporter (#7053)
- Fixed: Make screenreaders not read empty table cells (#6683)
- Fixed: Memory leaks due to BIO_NOCLOSE flag (#6604)
- Fixed: Packets of exactly max size were rejected (#6924)
- Fixed: Prevent local muted users from triggering attenuation (#6747)
- Fixed: Remove mention of variable bitrate from UI (#6441)
- Fixed: Request accessibility permissions on macOS (#7041)
- Fixed: Update chat bar, if selected channel is modified (#6748)
- Fixed: Various timing related issues when connecting to a server (#7012, #6989)
- Fixed: VoiceRecorder filename sanitazation (#7018)
Server
- Added: Allow choosing between banning by IP, certificate hash, or both (#7034)
- Added: Allow running while DB is in read-only mode (#6673)
- Added: Error code when UDP socket binding fails (#6410)
- Added: Introduce new and state-of-the-art command line argument parsing (#6243)
- Added: JSON import/export to/from database (#6806)
- Added: Print more details about Ice initialization errors (#6673)
- Added: Setting for rolling packet stats time window (#6683)
- Changed: Increase default maximum message size to 1MB (#7013)
- Changed: Switch to new database backend (#6806)
- Changed: Switch to Qt6 from Qt5 (#6516)
- Fixed: Crash on invalid user IDs in RPC calls (#6847)
- Fixed: De-duplicate ban list client-side and server-side (#7034)
- Fixed: Packets of exactly max size were rejected (#6924)
- Fixed: Stale server-side username cache (#6383)
- Removed: DBus support (#6580)
Positional audio plugins
- Added: Plugin for “Grounded” (#6491)