IT WORKS!!! 🎉🎉🎉
I've been trying to get rid of Microsoft's obnoxious "Upgrade Your Plan" button in Microsoft 365 for ages. It's incredibly irritating that paying customers are forced to look at an advertisement they can't dismiss.
I just downloaded and ran the Windows Registry (.reg) fix, restarted Office, and the button is COMPLETELY GONE!
Here's the direct link to the fix:
https://gist.github.com/cruithne3753/d7ebf2f11203635f5ba7478b4de3600c
I did NOT use the Python fix. I used the .reg file that changes three Office feature settings to "false."
No downgrading Office, no disabling updates, and no apparent loss of functionality. Just a clean interface again!
Huge thanks to the person who figured this out. Microsoft, with all its resources, couldn't provide a simple "Don't show this again" option, but one resourceful individual managed to solve the problem.
For anyone else trying this: Back up your registry or create a Windows restore point first, and keep the undo file. This is an unofficial workaround, and future Office updates could potentially undo it.
This deserves to be shared far and wide. Thank you!!!