Error code 80090016 Trusted Platform Module has malfunctioned.

I am facing same issue ... still no resolution. Any more solution on this. Not sure if I need to change my computer as this is TPM related issue.

I had the same 80090016 etc. issue.  I followed the solution below. Deleting the Contents of Ngc Folder didn't do it.  I wasn't able to rename the "C:\users$dir\AppData\Local\Packages\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy" folder, but I deleted everything in it that I had permission to.  Then I was able to sign in and add my account to the desktop version. I was also able to activate my Office 365 ProPlus after this too.

https://social.technet.microsoft.com/Forums/en-US/a3cb96e0-2216-4e65-805f-9d1e7594890c/outlook-365-trusted-platform-module-error-code-80090016?forum=outlook

This did not work for me.

In fact it completely borked the AAD package which didn't get reinstalled - i highly advise against doing this or deleting the NGC.

For me the only solution was to delete the entire profile and removed the account from the local machine and recreate it

Hello Eric,

Thank you for your response. Outlook is just a Mail client that let customer connecting to remote mail service more easily. If you remove your school and work account (make sure that all data are synced to server ), nothing special will happen, except for you can’t access mail service from local client and emails items will not there either.

Office 365 Business account is one type of Work accounts which is often assigned and managed by Office 365 tenant admin. If you keep receiving password prompt, please make sure there isn’t any change made by admin. Then try to clear Windows Credential Manager to clean-up all office and adal related credential caches. SaRA also have an option “Outlook keeps asking for my password” (although the scenario may different, but you can still try it, its general steps are clear credential caches, safe mode, Outlook profile checking and so on ).

For the original error message about TPM, TPM is a hardware component which provides hard-ware-based security functions for users and device secrets. I think you may check updates for Windows OS, make sure the version is up-to-date. If there’s any third-party anti-virus, please temporarily disable it. If convenient, try to create a new Windows Profile and check if issue persists.

If any update, welcome back and share with us.

Best Regards,

Anna

Hi Anna,

Thank you for your reply. Unfortunately, it didn't work.  I used the recovery assistant and it created a new outlook profile. I wanted another Office 365 email added with my other 2. With the new profile, it creates a lot of extra steps to check that email.  When I tried to manually add the email again, I got the same error.

Another part of my question is about the "Work or school account" that was created.  I'm getting this annoying pop up asking me to log into my "Work or school account" and it keeps coming back even after putting in the password.

Do you know what will happen when I remove my “work account” and leave my Microsoft account?

I had the same 80090016 etc. issue.  I followed the solution below. Deleting the Contents of Ngc Folder didn't do it.  I wasn't able to rename the "C:\users$dir\AppData\Local\Packages\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy" folder, but I deleted everything in it that I had permission to.  Then I was able to sign in and add my account to the desktop version. I was also able to activate my Office 365 ProPlus after this too.

https://social.technet.microsoft.com/Forums/en-US/a3cb96e0-2216-4e65-805f-9d1e7594890c/outlook-365-trusted-platform-module-error-code-80090016?forum=outlook