This Module technology, according to Microsoft, is designed to provide hardware-based and security-related functions. If the TPM malfunctions or is corrupted, some Windows components may not perform as expected. The micro-controller would be unable to successfully execute system security integrity measurements and key creation and use. Read on to find out how to fix the TPM error 80090016 on both Windows 10 and Windows 11.

What does the Microsoft error code 80090016 mean?

The Outlook error code 80090016 is caused by a corrupted or malfunctioning TPM. This can be caused by various factors, as shown below:

System board replacement: If you are getting the Outlook error code 80090016 Keyset does not exist, it is likely because you have recently replaced your system board. This causes the authentication tokens generated by the TPM not to match the folders created initially. The solution here is to rename the folders. Issues with a user account: If you use a work or school account with Outlook, some problems with the account might lead to this issue. You can fix this by deleting the affected user account. Problems with the Outlook app: Sometimes, the Outlook app might malfunction. You might need to uninstall the app using one of the best uninstaller software.

Why is my TPM corrupted?

Most of the time, the TPM error is displayed because of interference with the PC Health Checkup. This application is responsible for alerting you about your system’s compatibility with software, such as checking if you have the required resources for Windows 11. It is also possible to get the keyset does not exist Office 365 error when malware infects your computer.

How can I fix error code 80090016?

1. Delete the contents of the Ngc Folder

2. Delete work or school account

Sometimes, the Outlook error code 80090016 or even on OneDrive and MS Teams can be due to a faulty work or school account. You can fix this by deleting the said account. After deleting the account, you can create a new one on your Windows 11 PC. SPONSORED

3. Rename the AAD.BrokerPlugin folder

If you are having issues switching administrator accounts, our guide on changing an administrator account can help. If your Microsoft error code 80090016 persists, try out the next solution instead.

4. Uninstall and reinstall Outlook

If you want to uninstall Outlook and remove its corresponding files easily, use a dedicated tool like CCleaner. It has a built-in uninstaller and a PC cleaner utility. This scans your whole PC for unnecessary files while being very user-friendly. With CCleaner, you can quickly and safely uninstall any program without leaving leftover files. We hope the TPM keyset does not exist code 80090016 has been resolved by now, and you can operate your Outlook like before. However, if the issue persists, check our guide on how to fix the keyset does not exist error. If the solution in this guide helped you solve the error code 80090016, don’t hesitate to share the tip that worked for you in the comments below.

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