So starting a week or so ago I have several friends\family, whom I provided Office 365 license and support for tell me Outlook was telling them their license was going to expire soon. They were all setup with Office 365 Business Premium, which includes Desktop Office, so this shouldn’t be the case.

I tried uninstall and reinstalling Office and they were still getting this prompt. So after researching more I found that and old license was stuck on the system.

After a bit of searching I found this article: http://ridilabs.net/post/2017/08/19/Removing-Expired-Office-365-Pro-Plus-License-.aspx. Below I’ll cover what is has in it, with more details.

This article covers using the ospp.vbs script (Office Software Protection Platform script) that can be used to manage licenses of Microsoft Office.

To fix the issue I did the following

1. Opened a Command Prompt as an administrator
2. Went to [C:\Program Files\Microsoft Office\Office16], for 64-bit off
   • If running 32-bit: [C:\Program Files\Microsoft Office\Office16]
3. Run: cscript ospp.vbs /dstatus
4. This will return results like this
   
5. From this list, I see that BCD8GP & BTDRB are both from expired licenses
6. So to remove these expired keys I ran this: cscript ospp.vbs /unpkey:BTDRB
   • Replace “BTDRB” with the last 5 of the product key returned on the system you run this on

I then uninstalled Office, again to be sure, and installed it fresh from office.com.

After doing that Outlook was working correctly again. On two other users Outlook just worked again, without having to re-install Office.