Unable to activate Office 365 apps following recent product updates

Hello Alan Gold, thanks for posting this in our community.

Error 49 typically indicates a sign-in or token validation issue between Office apps and your Microsoft account. This often happens after updates or when cached credentials conflict with the subscription status.

First, verify your subscription by going to Microsoft Account Services and confirming that it is active through 2027 as you mentioned.

Next, sign out of all accounts in any Office app such as Word or Excel by going to File > Account and choosing Sign out. Clear cached credentials by pressing Win + R, typing control keymgr.dll, and removing any Office-related credentials. You can also go to Settings > Accounts > Access work or school and disconnect any old accounts.

To reset Office activation, close all Office apps, open Command Prompt as Administrator, and run:

cd %ProgramFiles%\Microsoft Office\Office16

cscript ospp.vbs /dstatus

This shows the current license status. To remove old keys, run: (Replace XXXXX with the last five characters of the key shown.)

cscript ospp.vbs /unpkey:XXXXX

Clear the Office cache by deleting activation tokens. Navigate to:

C:\Users\<YourUser>\AppData\Local\Microsoft\Office\Licensing

Delete all files in this folder and restart your PC.

Repair Office by going to Control Panel > Programs > Office > Change and selecting Online Repair. This refreshes activation components.

Finally, re-sign in by opening Word or Excel and signing in with the same Microsoft account linked to your subscription. Make sure Connected Services shows your account.

Kind regards,

John Oli