Fix Teams Desktop App Stays on Loading After a Windows Update

After a Windows update, Teams desktop app may get stuck on the loading screen and never open. This happens because the update changes system files, permissions, or the Teams cache, which the app cannot handle on its own. In this article, you will learn why the loading loop occurs and how to fix it with clear steps. You will also see related issues and a comparison of the classic and new Teams clients.

Why Teams Stays on Loading After a Windows Update

Windows updates can change system libraries, network settings, and user profile permissions. Teams depends on these components to load its interface. When the update alters a required file or permission, Teams cannot initialize properly and stays on the loading screen.

Another common cause is a corrupted Teams cache. The cache stores temporary data like icons, profiles, and login tokens. If the Windows update interrupts the cache writing process, the files become unreadable. Teams then tries to read them and fails, looping back to the loading state.

The Teams app also uses a background process called Teams.exe. After an update, this process may still run from the old version. The new version cannot start because the old process holds a lock on the app files. You must end this process before restarting Teams.

Steps to Diagnose and Fix Teams Loading After Windows Update

Follow these steps in order. Check if Teams opens after each step before moving to the next.

Step 1: End the Teams Background Process

1. Open Task Manager
   Press Ctrl + Shift + Escape on your keyboard. The Task Manager window opens.
2. Find Teams processes
   In the Processes tab, look for any entry named Microsoft Teams. You may see several entries. Click each one and select End task. Repeat for all Teams entries.
3. Close Task Manager
   After ending all processes, close Task Manager. Try opening Teams again. If it still hangs, continue to Step 2.

Step 2: Clear the Teams Cache

1. Close Teams completely
   Right-click the Teams icon in the system tray and select Quit. Confirm that no Teams process remains in Task Manager.
2. Open the Teams cache folder
   Press Windows key + R to open the Run dialog. Type %appdata%\Microsoft\Teams and press Enter. File Explorer opens the Teams data folder.
3. Delete the cache contents
   Select all files and folders inside this folder. Press Ctrl + A to select everything, then press the Delete key. If Windows asks for permission, click Yes. Do not delete the folder itself, only its contents.
4. Restart Teams
   Open Teams from the Start menu. The app will rebuild the cache and should load normally.

Step 3: Run Teams as Administrator

1. Find the Teams shortcut
   Right-click the Teams icon on your desktop or in the Start menu. Select Properties.
2. Enable administrator mode
   In the Properties window, click the Compatibility tab. Check the box that says Run this program as an administrator. Click Apply and then OK.
3. Launch Teams
   Double-click the Teams shortcut. If a User Account Control prompt appears, click Yes. Teams will start with elevated permissions.

Step 4: Reinstall Teams

1. Uninstall Teams
   Open Settings with Windows key + I. Go to Apps > Installed apps. Search for Microsoft Teams. Click the three-dot menu next to it and select Uninstall. Follow the prompts.
2. Restart your computer
   Restart Windows to clear any remaining Teams files from memory.
3. Download Teams again
   Go to the official Microsoft Teams download page and download the installer. Run it and follow the installation steps.
4. Sign in and test
   Open Teams and sign in with your work or school account. The app should load past the loading screen.

Step 5: Check for Windows Update Issues

1. Open Windows Update settings
   Go to Settings > Windows Update. Click Update history to see recent updates.
2. Uninstall the problematic update
   If Teams worked before a specific update, click Uninstall updates. Select the update that matches the date the problem started. Uninstall it and restart your computer.
3. Test Teams again
   Open Teams after the restart. If it loads, the update was the cause. You can reinstall the update later once Teams is stable.

If Teams Still Has Issues After the Main Fix

Even after clearing the cache and reinstalling, some users see the loading screen persist. The following issues are common after a Windows update.

Teams Shows a Blank White Screen Instead of Loading

A blank white screen often means the graphics driver is outdated. Windows updates can replace your GPU driver with a generic one. Update your graphics driver from the manufacturer website or via Device Manager. Right-click the Start button, select Device Manager, expand Display adapters, right-click your GPU, and select Update driver.

Teams Gets Stuck on the Loading Screen with a Spinning Circle

This usually indicates a network issue. Windows updates can reset your proxy or VPN settings. Check your internet connection by opening a browser. If you use a proxy, go to Settings > Network & Internet > Proxy and ensure the settings match your corporate configuration. You can also try disabling the proxy temporarily to see if Teams loads.

Teams Opens Only After Repeated Restarts

If Teams works only after you restart the computer multiple times, the Teams background service may be corrupted. The Teams app uses a service called TeamsUpdaterService. Open Services by pressing Windows key + R, typing services.msc, and pressing Enter. Find TeamsUpdaterService, right-click it, and select Restart. Set its startup type to Automatic if it is not already.

Classic Teams vs New Teams: Which One to Use After a Windows Update

Item	Classic Teams	New Teams
Installation	Separate MSI installer, per-user	Auto-installed from Teams admin center, per-machine
Cache location	%appdata%\Microsoft\Teams	%localappdata%\Microsoft\Teams
Performance	Uses more memory and CPU	Faster startup and lower resource use
Update behavior	Manual updates via installer	Automatic updates from Microsoft
After Windows update	More likely to break due to cache and permissions	More resilient but still can hang if cache is corrupted

If you are still using classic Teams, consider switching to new Teams. New Teams uses a different cache path and has better recovery behavior after system updates. You can switch by clicking the Try the new Teams toggle in the top-left corner of the classic app.

After applying the fixes in this article, you can now open Teams normally after a Windows update. Start by clearing the cache and ending background processes, then reinstall if needed. If the problem returns, check for a specific Windows update that may be incompatible. Use the new Teams client to reduce the chance of future loading issues, and always keep your graphics driver updated.