/Library/PrivilegedHelperTools/com.microsoft.office.licensing.helper Re-activate
So next time you see that oddly-named plist, don’t curse it. Salute it. It’s a 15-year-old piece of digital archaeology, still processing your license checks one Rosetta-emulated cycle at a time. com.microsoft.office.licensing.plist
Ask any veteran Mac admin about troubleshooting Office, and they'll tell you: “Check the licensing plist.” Over time, this innocent XML file can bloat to 50, 100, or even 200 MB. Why? /Library/PrivilegedHelperTools/com
This .plist was born around 2008, during the Mac Office 2008 era. Back then, licensing was a simple affair: you typed a 25-character product key, and Microsoft scrambled it, stored it in this file, and checked it when Word or Excel launched. But the real oddity is the . Ask any veteran Mac admin about troubleshooting Office,
Some newer versions (Office 2019 onwards) use a "V2" variant to support both Intel and Apple Silicon (M1/M2/M3) architectures. The troubleshooting steps are identical.
Open any Office application (e.g., Word). You will likely be greeted with the activation screen. Sign in with your credentials.
sudo /Applications/Microsoft\ Word.app/Contents/Resources/Office/reset_license.sh