If you are experiencing functionality issues with Microsoft Teams (i.e the inability to create channels, edit replies/posts), this is oftentimes caused by the cached data on your device. To correct this, clear the Microsoft Teams cache on your device using the steps below (for Windows and Mac devices).

For Windows

1. Quit the Microsoft Teams desktop app. 
   
   

2. In the search bar (located on the bottom left of your screen), type or copy and paste in:  %AppData%\Microsoft\teams\ and click on Open in the right-hand side of the window.

   Open

   

   
   
   
   

3. Delete the following files from the Teams app data folder:
   application Cache
   blob_storage
   databases
   GPUCache
   IndexedDB
   Local Storage
   tmp
   
   
   

   Open

   

   
   
   
   

4. Restart your device to finish clearing your cache. Once the device is restarted, open the Teams app and retry using it

For Mac

1. Quit the Microsoft Teams desktop app.
   
   

2. In a new Finder window, go to Go > Go to Folder > enter /Users/<username>/Library/Application Support/Microsoft/Teams and then click Go. 
   
   
   

     
   
   

   
   
   

3. Delete the following files from the Teams folder: 

   application Cache/Cache
   blob_storage
   Cache
   databases
   GPUCache
   IndexedDB
   Local Storage
   tmp
   
   

   
   
   

4. Restart the Microsoft Teams app to finish clearing your cache.