Sync from Teams folder not sync

Nanodroid 

There could be several reasons why a folder or file from Teams is not syncing to OneDrive for Business. Here are some steps you can try to fix the issue:

1. Ensure that OneDrive is turned on. You can do that by opening your system tray on your taskbar right side1.
2. If OneDrive was turned on – restart it.
3. Check for any sync failures.
4. Ensure that you are correctly logged in.
5. Try signing out of Teams, rebooting your machine, and signing back into Teams.

If the issue persists, you may want to try accessing Teams in an incognito window in any internet browser (Ctrl+Shift+N), then open your team > channel > library, and click the Sync button.

I hope this helps!