Microsoft Teams won’t open? Try these, in order.

Teams freezing on the loading screen or refusing to launch is usually a stuck process or a corrupt cache, not a broken install. These steps go from the 10-second fix to the full reset.

01 · The fast fixes.

  1. Quit Teams completely. Right-click the Teams icon in the system tray → Quit. Then reopen it. A background copy stuck half-open is the most common cause.
  2. End it in Task Manager. If there’s no tray icon, press Ctrl + Shift + Esc, end every Microsoft Teams process, and relaunch.
  3. Restart the PC. Boring, but it clears the stuck process and frees whatever Teams was waiting on.

02 · Clear the Teams cache.

A corrupt cache is the classic “stuck on the loading screen” cause. Clearing it is safe. Your chats and files live on the server, not in the cache.

  1. Quit Teams completely (step 1 above).
  2. Press Windows + R, type %appdata%\Microsoft\Teams and press Enter (classic Teams). For the new Teams, clear the cache under %localappdata%\Packages\MSTeams_8wekyb3d8bbwe\LocalCache.
  3. Delete the contents of that folder (not the folder itself), then reopen Teams. It rebuilds the cache on launch.

03 · Update, switch, or reinstall.

  1. Update Teams and Windows. An old build can simply fail to launch after a server-side change.
  2. Try the other Teams. If “new Teams” won’t open, switch to classic (or vice-versa). Microsoft is mid-transition and one often works when the other doesn’t.
  3. Reinstall. Uninstall Teams, restart, and install the latest version from Microsoft. Your data is on the server, so nothing is lost.

04 · Or let KoalaFix do it.

KoalaFix does this triage for the person who just wants Teams to open: it ends the stuck processes, clears the right cache for whichever Teams you’re on, and reinstalls if it has to, all from “Teams won’t open.” No ticket, no hunting through AppData.

Try KoalaFix free → See how it works

05 · FAQ.

Why does Teams get stuck on the loading screen?

Almost always a corrupt cache or a background Teams process that never closed. Quit Teams fully, clear the cache, and relaunch.

How do I clear the Teams cache?

Quit Teams, then delete the contents of %appdata%\Microsoft\Teams (classic) or the new Teams LocalCache folder, and reopen Teams.

Is it safe to delete the Teams cache folder?

Yes. The cache only stores temporary data and rebuilds on next launch. Your chats, files and meetings are stored on Microsoft’s servers, so you won’t lose anything.