Microsoft Teams may sometimes display a generic Unexpected error or Unknown error alert.
This usually happens when users hit the Files tab.
Not having additional information about the cause of these errors is really confusing.
But we dug a bit into this matter and well list the findings below.
look to see if you’ve got the option to open your files in SharePoint.
Meanwhile, drop off of Teams and exit the app completely.
start your gear to get rid of the temporary files associated with your current Teams session.
test whether the Files tab is now functional on your desktop app.
If youre using the web version of Teams, refresh your tab.
Additionally,dump the cacheand disable your extensions.
If that did not work, switch to a different web client.
Dont forget to check your connection.
Maybe youre experiencing an unexpected drop in connection.
That might explain why you’ve got the option to open your files via the Files tab.
Launch the Task Manager and close all the Teams-related tasks.
Then launch Teams again and attempt to kick off the problematic files.
Some users confirmed they fixed the issue byreinstalling Office.
peek if this solution does the trick for you.
Alternatively, you’re free to download and install theMicrosoft Support and Recovery Assistant.
This tool can fix Office, Microsoft 365, or Outlook problems.
Hopefully, it can fix your Teams-related issues as well.
