The glitch notice We couldnt complete the call triggers when Microsoft Teams fails to call your contacts.
When this error pops up, other users are usually unable to call you back.
In other words, you cannot complete calls or join Teams calls.
test whether theres any known issue that could be causing this error.
The information should be available on theMicrosoft Teams Service Statuswebpage.
If there are no known issues, the problem could be on your end.
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Fix Microsoft Teams Couldnt Complete the Call
Quick Fix: Sign out of your Teams account.
kickstart your gadget and then log back in.
By signing out you basically refresh your devices connection to the Microsoft Teams servers.
find out if this quick workaround ironed out the error.
And the other way around.
Thats why this call error often affects mobile devices, such as phones and tablets.
Also, see if theres a new Android version available for your unit.
drop in the latest OS version, and launch Teams again.
scrub the Cache
Clearing the app cache on the affected machine could solve this problem.
To see to it the cache files of other apps are not interfering with Teams, go toSettingsStorage.
Hit theCleanupbutton to clear additional junk files.
make a run at call someone to see if the call feature is functional now.
