1. Open the Edge browser.
2. Select the horizontal three dots in the upper right corner of your browser window.
3. Click Settings.
4. Choose Privacy, search, and services.
5. Scroll down to Clear browsing data and find Clear browsing data now.
6. Click Choose what to clear.
7. A time range will appear, and you can choose a time range from the list. (What you select will delete cookies collected from the chosen timeframe.)
8. Choose Cookies and other site data.
9. Click Clear now.
10. Go to www.office.com and try to sign in
Other troubleshooting methods:
Choose the 3 dots in the right hand corner & choose in private browser as below:
Log into www.office.com with your credentials
Removing the Teams application from your device completely is also another option, to remove this from your PC please follow the following steps:
Search for add or remove programs from your start menu

Search for Teams and choose "Uninstall" as below:
Use the following link to re-install teams on your PC: Download Microsoft Teams Desktop and Mobile Apps | Microsoft Teams
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