

Please leave a comment below if this helped or if you have anything to add. Summary: Deleting those offending registry keys was the step that fixed my issue. I opened up the Office applications and signed into the user’s Office account. Here is the Registry key location from where we can delete the identities and profiles HKEY_Current_User \ Software \ Microsoft \ Office \ 15.0 \ Common \ Identity - > Delete the Identities and Profiles folders. Step Three: Remove the credentials from registry. Go to Control Panel - > Credential Manager - > Windows Credentials - > Delete the Microsoft 15 credentials. Step Two: Remove the Office credentials from credential manager. To remove the Office credentials from credential manager please follow the below step Step One: Sign out from all your Office 365 applications. Here is what they advised me to do – and it fixed it! Below you will find the solution. I decided to reach out to Microsoft about this issue. I was at the end of my troubleshooting rope. 0x80041015 Partial Pkey=M7TW3″ I looked online for help with this error but I came up empty. ” Installation of the Proof of Purchase failed. I also checked Event Viewer for clues, and I found this.

Office 2016 activated just fine on all the computers besides one PC. For a majority of the users, we purchased Office 365 Business Premium licenses that included Office 2016 (Buy Office 2016). Recently, we upgraded a customer from a local Exchange server to Office 365.
