Issues

• Doesn't work with age of empires 4 IV

  Open-Wine-Components/umu-launcher#729 · Filter by author azizsayfiddin opened on Oct 10, 2026

• All non-steam apps have the window class steam_app_0 causing inappropriate window grouping in KDE

  Open-Wine-Components/umu-launcher#726 · Filter by author LumKitty opened on Sep 30, 2026

• Recent update breaks local umu-launcher (bwrap: execvp true: No such file or directory)

  Open-Wine-Components/umu-launcher#725 · Filter by author IfGremlinThen opened on Sep 30, 2026
  1

• GStreamer/libgstlibav media decoding failure with Proton Experimental via steamrt4 (The Smurfs – Dreams, GOG)

  Open-Wine-Components/umu-launcher#724 · Filter by author BDGreyson opened on Sep 20, 2026
  1

• NVIDIA driver not captured into steamrt4 container on Arch-based distros

  Open-Wine-Components/umu-launcher#718 · Filter by author TheoYOSHIURA opened on Sep 1, 2026
  1

• Issue running Steam (Windows version)

  Open-Wine-Components/umu-launcher#717 · Filter by author mr-falafel opened on Aug 24, 2026

• KeyError: 'steamrt4-arm64' when trying to run umu-run on Asahi (aarm64)

  Open-Wine-Components/umu-launcher#716 · Filter by author Mershl opened on Aug 22, 2026

• umu-launcher.desktop not shipped in Debian .deb package

  Open-Wine-Components/umu-launcher#710 · Filter by author jacobEAdamson opened on Aug 1, 2026

• Dosdevice S: being removed when umu-run is launched

  Open-Wine-Components/umu-launcher#709 · Filter by author MadByteDE opened on Jul 30, 2026
  10

• Remove all network connections

  Open-Wine-Components/umu-launcher#707 · Filter by author ivanstepanovftw opened on Jul 27, 2026
  21

• TruckersMP launcher cannot find the game now

  Open-Wine-Components/umu-launcher#705 · Filter by author RaptorBlue428 opened on Jul 25, 2026
  1

• Make command not working

  Open-Wine-Components/umu-launcher#699 · Filter by author Celtic-Dunce opened on Jul 19, 2026
  1

• [BUG] [1.4.0] umu-run confusing game directory runtime when running through the command-line

  Open-Wine-Components/umu-launcher#698 · Filter by author Sempiternal-Futility opened on Jul 18, 2026

• [apparmor] 1.4.2-rc bwrap-userns-restrict linked to wrong location

  Open-Wine-Components/umu-launcher#697 · Filter by author arrowgent opened on Jul 18, 2026

• [1.4.0] ERROR: Failed opening file '/home/Zsar/.local/share/umu/compatibilitytools/UMU-Latest/compatibilitytool.vdf', unable to determine latest build

  Open-Wine-Components/umu-launcher#695 · Filter by author Zsar opened on Jul 14, 2026
  1

• [NixOS] pressure-vessel isolates host CA certificates → curl error 77 inside Wine breaks all HTTPS downloads

  Open-Wine-Components/umu-launcher#688 · Filter by author Brensom opened on Jun 29, 2026
  2

• winetricks fails with mktemp inside pressure-vessel when TMPDIR points to non-existent nix-shell directory

  Open-Wine-Components/umu-launcher#687 · Filter by author Brensom opened on Jun 28, 2026

• Suggestion: Improve Compatibility for New Ubuntu Releases

  Open-Wine-Components/umu-launcher#685 · Filter by author Newblackmask opened on Jun 26, 2026

• [BUG] Default UMU Proton crashes outright, using different protons with UMU solves the issue

  Open-Wine-Components/umu-launcher#677 · Filter by author miwakasa opened on Jun 6, 2026
  2

• Some sort of env var to disable logs (Like WINEDEBUG=-all)

  Open-Wine-Components/umu-launcher#676 · Filter by author Twig6943 opened on Jun 6, 2026

• Cannot set STEAM_COMPAT_CLIENT_INSTALL_PATH

  Open-Wine-Components/umu-launcher#675 · Filter by author necauqua opened on Jun 4, 2026
  2

• [PSA / Upstream Issue] bwrap crashes instantly on minimal Wayland setups due to KWin capability leak (CAP_SYS_NICE)

  Open-Wine-Components/umu-launcher#672 · Filter by author adamjonn opened on May 31, 2026
  1

• cant run make. no pyproject.toml or setup.py

  Open-Wine-Components/umu-launcher#671 · Filter by author stoggy875 opened on May 31, 2026
  8

• AVPro video playback fails under umu but works from Steam: winegstreamer error: source: Secure connection setup failed.

  Open-Wine-Components/umu-launcher#670 · Filter by author xuan25 opened on May 31, 2026

• umu breaks steam recording for non-steam games

  Open-Wine-Components/umu-launcher#669 · Filter by author Lucki opened on May 29, 2026