Occasionally Microsoft Teams will decide to continuously utilize 100% CPU of one core and not stop unless it is killed.

Is there a better solution to this problem than to kill it and hope it won't do it again soon?

  • 1
    Is there a problem? What are the symptoms? Using 100% of a single core shouldn't be an issue unless you are experiencing crashes, system overheating etc.
    – terdon
    Sep 17, 2021 at 9:03
  • 1
    100% cpu usage of a single core in idle is a problem on my electricity bill/battery time!
    – Ocean
    Sep 17, 2021 at 12:19
  • What do you use Teams for? Does it happen when it's idle, or only when it's doing certain things? Sep 17, 2021 at 12:31
  • Mostly video calls with many participants and sometimes chat. When I notice the high CPU usage via my monitoring it has always been when teams is idle. I haven't figured out how to trigger this, since it only happens when I'm not using teams.
    – Ocean
    Sep 17, 2021 at 14:17

1 Answer 1


This is a known issue with Teams and Skype for Linux.





A few people have reported that deleting the cache directory for Teams fixes the high CPU utilization. It is unclear whether this is a permanent or temporary fix. On Ubuntu 18.04, the Teams cache is located at

~/.config/Microsoft/Microsoft\ Teams/Cache

If this doesn't work, and you need to join a Teams meeting on battery power, I'd suggest you use the Teams web app rather than the desktop app.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .