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Why do I get "we've run into an issue" and error code caa70004 when starting Microsoft Teams?
I installed Teams on my desktop. Whenever I click it, this error message appears. Why?
We're sorry—we've run into an issue.
Error code - caa70004
There's a more permanent way to sign in to Microsoft Teams. If you're having trouble completing the process, talk to your IT admin.
As a stopgap measure, I can open my Outlook For Business, find ANY email from someone else containing a Teams link, and click it. Then Teams opens successfully. However, I want to just click on Teams on desktop to load Teams, sign in, and call.
My neighbor apprised me how to solve this glitch, but he can't explain it.
Just clear cache as outlined by Veejay RC. But neighbor doesn't know why clearing cache solves. Then my glitch disappeared! Yay!
To clear your Teams desktop app cache:
1. Sign out on Teams > Quit Microsoft Teams by right clicking the icon and select Quit.
2. On your keyboard, Hold Windows key and Press R
3. Cut and paste %appdata%\Microsoft\Teams in the RUN then OK.
4. Delete the contents of the entire folder.
5. Restart Device > Restart Microsoft Teams > Sign In.
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