Microsoft teams error code 80284001

Question

I entered Microsoft teams desktop app and I got a message saying that I had a connection error (which was false) and it would not let me attend a meeting. I closed and opened the application and the error still persisted so I uninstalled it and reinstalled it and now I am unable to log in through the desktop app. On the bottom left it says error 80284001.

Answer 1

@alex ,

Does anyone else have the same issue?

To exclude the account itself, you could try to sign in Teams web client(https://teams.microsoft.com) in InPrivate mode and check the result.

Then, perform a clean boot to exclude whether a background program is interfering with Teams.

Make sure Teams client is the latest version. If there is any update requirement on the machine, please install the package in time.

Moreover, check the health status of Microsoft Teams in Office 365 admin center > Health > Service health.

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Answer 2

Also check to see if your computer's TPM module is working correctly. If you open "Security Processor" in Windows settings, you should see some specifications. If the information is null or blank, the module may not be functioning properly. In our case, a shutdown of the laptop wasn't enough. We had to unplug the power cord, hold the power button for 30 seconds, and then reboot. Then the TPM was found again and Outlook/Teams worked as usual. Shout out to the responses in the Dell community forums for finding the solution: https://www.dell.com/community/XPS/XPS-15-9560-Alert-TPM-device-is-not-detected/td-p/7412306