Open Teams and wait for it to download required files.Navigate to %appdata%/Microsoft/Teams in a File Window.Fully quit Microsoft Teams and ensure it’s not still running in the toolbar at the bottom right of Windows.Often the first step in troubleshooting any issue with Teams should be to clear the Teams cache, this will force Teams to redownload any cached files and solve a myriad of issues.
We’ve all been in a situation where suddenly you can’t chat to people, or you can’t access files anymore since trying to load anything just leads to a blank page and numerous other Teams bugs.