Hi,

After updating Trados Studio 2022, the application crashes on startup with the error: 'service sdl.desktop.platform.commandbars.IActionService could not be started'. I have cleared AppData and reinstalled, but it persists. I tried all the help AI could offer, without success. Please help.

And here's a detailed summary of what I've tried:

• Software Version: Trados Studio 2022 (recently updated to SR2 CU12).
• Environment: Co-existing with an older, functioning installation of Trados Studio 2014 (which must remain untouched).
• Original Issue: After a recent software update in Trados Studio 2022, the option to "Create Return Package" failed to function/was throwing errors.

1. Application Repair: Attempted a "Repair" via Windows Control Panel (Apps & Features) for Trados Studio 2022. The process completed successfully, but immediately after, the software began crashing instantly upon launch.
2. Manual Cache & Settings Reset:
   • Deleted plugincache.xml and user configuration files (UserSettings.xml / BaseSettings.xml) from %AppData%\Trados\Trados Studio\Studio17.
   • Replaced a missing UserSettings.xml using its .bak backup copy.
3. Application Reset & Factory Reset:
   • Renamed and backed up the Studio17 folders in both %AppData% (Roaming) and %LocalAppData% paths.
   • Deleted the projects.xml file from Documents\Studio 2022\Projects to prevent the application from auto-loading a corrupt project layout.
4. Plugin Clean-Up: Deleted the Plugins directories from Roaming, Local, and ProgramData paths to eliminate any outdated third-party add-ons (including Language Weaver and WorldServer Components).
5. System Verification: Ran a full Windows System File Checker scan (sfc /scannow), which returned no integrity violations, confirming the OS is stable.
6. Full Clean Reinstall: Uninstalled Trados Studio 2022 completely via Control Panel and performed a fresh installation using the official Trados Studio 2022 SR2 CU12 executable wrapper.
7. Prerequisite Check: Attempted to reinstall Microsoft WebView2 Runtime (Standalone Evergreen x64), but Windows blocked it because a twin, updated version is already present on the system.

• Behavior A (Initial Crash Loop): After the initial repair, the software crashed silently within a split second during the "Loading application modules" phase.
• Error Message 1 (CommandBars / UI Conflict): During clean launch wizard attempts, the following structural layout error appeared:

  "service sdl.desktop.platform.commandbars.IActionService could not be started"

• Error Message 2 (Window Thread Conflict): Intermittently paired with the UI initialization failure:

  "Invoke or BeginInvoke cannot be called on a control until the window handle has been created"

• Error Message 3 (Missing Methods): Upon trying to re-import or re-open a project:

  "Method not found: [followed by a long assembly path...]"

• Trados Studio 2022 is currently locked in an unlaunchable state due to persistent IActionService thread crashes, likely tied to damaged registry keys or orphaned cloud integration paths from the prior update.
• Projects are temporarily being safely processed using Trados Studio 2014 as a fallback.
• Request for Technician: A remote session (via AnyDesk/TeamViewer) is required to clean up orphaned registry hives and restore Trados 2022 launch capability

Thx

Mirit