Error:80090016 While trying to activate Microsoft excel and other products

Question

I use a school email for my Microsoft account. After fixing an unrelated hardware issue, I can not activate Excel, Word etc and when I try to login it shows an error: 80090016 server message: keyset does not exist.

(for some reason I'm unable to add an image so I'm using google sites)

Answer 1

Dear Somgolie Ejinkeonye,

Good day! Thank you for posting to Microsoft Community. We are happy to help you

I go through the post carefully, based on the description, it seems that you get issue when activate Office, you get error.

What I want to confirm is whether your account is provided by the school, (to distinguish Microsoft account from school work account). If you're using a school or company accoun, there are some suggestions:

1. Try reset Office activation status with tool from link: OLicenseCleanup.vbs, the tool can help solve the issue if it is caused by account conflict.
2. Go to Start Menus>Settings>Account>Access work or school, disconnect all your accounts from here, then restart your PC, sign in Excel again and check the result. You may also try automate this by the tool from the link: Clear credentials from Workplace Join
3. If you get account from your company or school and they require you to set up multifactor authentication for your account,  please sign in https://portal.office.com check if you are required to set up MFA. Check the link for more information: Set up your Microsoft 365 sign-in for multi-factor authentication
4. Try follow the link to clear TPM Key and check the result: Clear all the keys from the TPM

If your account is not provided by the school, I also request that you provide a specific screenshot of the error message.We will do our best to help you.

Sincerely,

Tin | Microsoft Community Moderator