Teams wont start

I'm experiencing the same issue with latest teams. Crazy thing is even after reinstalling windows, it does the same thing but works if i use a local account

Dear @Miłosz Misiak,

Thank you for posting your question in the Microsoft Q&A forum.

Based on your description, MS Teams won’t fully launch and only flashes in Task Manager although you have reinstalled, cleared cache, repaired/reset, and updated Windows but it still persists.

Try these steps again:

1. If Teams is still running, right-click the Teams icon in the taskbar, and then select Quit.
2. Open the Run dialog box by pressing the Windows logo key +R.
3. In the Run dialog box, enter %appdata%\Microsoft\Teams, and then select OK.
4. Delete all files and folders in the %appdata%\Microsoft\Teams directory.
5. Restart Teams.

If it still does not work. Here are some suggestions you can try as steps below:

A. Fully quit Teams & kill background processes

1. Close Teams if any window shows.
2. Open Task Manager > Details tab > End task for anything named:
   • ms-teams.exe, Teams.exe, TeamsBootstrapper.exe, MSTeams.exe
   • msedgewebview2.exe (Edge WebView2 host)
3. If Teams keeps re-spawning, sign out of Windows once and sign back in

B. Remove all Teams app folders

For the new Teams (MSIX / Microsoft Store):

• Delete these folders if present:
  • C:\Users\<you>\AppData\Local\Packages\MSTeams_8wekyb3d8bbwe
    • C:\Users\<you>\AppData\Local\Microsoft\Teams
      • C:\Users\<you>\AppData\Roaming\Microsoft\Teams

For the classic Teams (EXE):

• Delete:
  • C:\Users\<you>\AppData\Local\Microsoft\Teams
  • C:\Users\<you>\AppData\Roaming\Microsoft\Teams
• Also delete:
  • C:\Users\<you>\AppData\Local\SquirrelTemp (if it exists)

C. One-time new profile test

Create a new local Windows user, sign in, install Teams, and launch.

• If it launches there, the issue is within your original profile

I help information above helpful, if you have any other questions, please feel free to reach out

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