Open Activity Monitor while validating an Office license on an M2 MacBook. You’ll see a process called Microsoft Office Licensing Helper (Intel) —a 32-bit process running on a 64-bit ARM chip via an emulation layer. That’s like flying a modern jetliner using a steam engine’s control rods. And it all revolves around that little .plist file.
For system administrators, IT professionals, and power users managing macOS environments, few files cause as much confusion—or hold as much critical importance—as the com.microsoft.office.licensing.plist file. This single property list file acts as the gatekeeper for the Microsoft Office suite on a Mac. When it works, it is invisible. When it fails, it can bring productivity to a grinding halt. com.microsoft.office.licensing.plist
Volume licensing uses a helper tool. Reset it: Open Activity Monitor while validating an Office license