How to fix the arrow keys not working in Microsoft Teams.

I honestly cannot believe how garbage Microsoft Teams actually is.

1. You can't add words to the dictionary? Seriously?
   
2. It's a major resource hog (Requires a top end PC to work, else use Teams and nothing else at the same time)
3. The arrow keys randomly stop working,
4. No animated background in video calls (OK, not a deal breaker but close).
5. Navigation is mess. Trying to find certain meetings, chats, you name it, it's a chore. If you have a choice, use preferably Slack (or Zoom if you must) as they are superior.
   

Anyway, enough of a rant.

You are here to fix the arrow keys so simple step first, try killing Teams via Task Manager. If that doesn't work then there are many other time-wasting fixes.

Clear the cache, upgrade Teams and of the course, the Windows cure all, reboot.