If you’ve been using Microsoft Teams, chances are you’ve had one of the vast array of annoying error messages over time. These errors come with different codes and messages, and they typically lead to the same problem: being unable to sign in to the Teams app on your computer. Fortunately, there are several straightforward troubleshooting methods you can try to fix this, and these fixes work for pretty much all Teams error codes.

Takeaways:

  1. How do you fix Microsoft Teams error 2147942402 on Windows 11
  2. What keeps causing Teams Error Code 2147942402 on Windows 11

How to Fix Microsoft Teams Error 2147942402 on Windows 11

We’ve covered many Microsoft Teams errors over the years, including a variety of error codes. Feel free to check out those guides if you face other issues. For now, follow the steps below to fix Microsoft Teams error 2147942402 - Your computer’s Trusted Platform Module has malfunctioned. If you’re in a hurry, you can always switch to the Teams web app temporarily, which bypasses sign-in problems, though it’s less convenient. But to clear the Microsoft Teams cache on Windows 10, do the following:

  • Press Windows Key + R to open the Run dialogue.
  • Type or paste this path and hit Enter:

%appdata%\Microsoft\teams\Cach

  • This opens the folder containing Teams cache files.
  • Press Ctrl + A to select all files and press Delete to remove them.
  • Repeat this deletion process for each of these directories:

%appdata%\Microsoft\teams\application cache\cache

%appdata%\Microsoft\teams\blob_storage

%appdata%\Microsoft\teams\databases

%appdata%\Microsoft\teams\GPUcache

%appdata%\Microsoft\teams\IndexedDB

%appdata%\Microsoft\teams\Local Storage

%appdata%\Microsoft\teams\tmp

2147942402

  • Once all cache folders are cleared, restart your PC.
  • Download and reinstall the Microsoft Teams app.
  • After reinstalling, you should be able to sign in without any trouble.

Doing this should fix the problem for you, but if it doesn't, just go ahead and uninstall the Teams app, delete this folder again, restart your computer then reinstall it.

Trouble Signing Into Teams Web Version?

If you encounter a strange loop preventing you from changing the email address when signing into the Teams web app, check out this guide: How to fix Microsoft Teams can’t change sign-in email address.