Several different problems can often be fixed in Teams with the same solution: clearing Teams' cache. They are:

• The Teams app not launching properly and instead showing a message that says, "We're sorry--we've run into an issue."
• Unable to log in to Teams.
• Teams missing or different information when compared to the web version of Teams.
• Unable to find users or Teams.
• General Microsoft Teams slowness.
• Profile pictures missing or showing outdated images.
• Teams status not updating.
• Background images not showing.

These problems can sometimes be fixed by following the instructions below.

Clear the Classic Teams Cache on Windows

1. Right-click the Teams icon located in your system tray (in the bottom bar on your monitor) and select Quit. 
2. Hold the Windows key while pressing the R key. 
3. In Run, enter or paste %appdata%\Microsoft\Teams
4. Click OK. 
5. Delete all files and folders in this directory. 
6. Restart your computer, launch Teams, and sign in. 

Clear the New Teams Cache on Windows

1. Right-click the Teams icon located in your system tray (in the bottom bar on your monitor) and select Quit. 
2. Hold the Windows key while pressing the R key. 
3. In Run, enter or paste %localappdata%\packages\msteams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams
4. Click OK. 
5. Delete all files and folders in this directory. 
6. Start the new Microsoft Teams app.

Clear the Classic Teams Cache on a Mac

1. Quit Microsoft Teams. 
2. Click the Finder icon in the dock.
3. From the top menu bar, click Go and select Go to Folder.
4. In the small Go to the folder window, enter or paste  ~/Library/Application Support/Microsoft. Double-click on the search results or press return on the keyboard to navigate to that folder.
5. Drag the Teams folder to the Trash. 
6. Check to make sure Finder is still next to the Apple icon in the top menu bar, click Go again, then select Applications.
7. Double-click the Utilities folder. 
8. Double-click Keychain Access. 
9. In the search field, enter Microsoft Teams. The results may show Microsoft Teams Identities Cache. If they don't, skip to step 11. 
10. Right-click Microsoft Teams Identities Cache, then select Delete "Microsoft Teams Identities Cache". 
11. Restart Microsoft Teams. 

Clear the New Teams Cache on a Mac

1. Quit the new Microsoft Teams app.
2. Press command + space on your keyboard to open a search.
3. Enter Terminal and double-click the search result to open the program.
4. Enter rm -rf ~/Library/Group Containers/UBF8T346G9.com.microsoft.teams and press return on your keyboard.
5. Enter rm -rf ~/Library/Containers/com.microsoft.teams2 and press return on your keyboard. Terminal can now be closed.
6. Start the new Microsoft Teams app. A pop-up window may prompt you to choose whether to launch the new or classic Teams client.