To use the tool effectively, you must run it with administrative privileges: Close all Office applications (Word, Excel, etc.). Start Menu , right-click on Command Prompt , and select Run as Administrator Navigate to the folder using the command. For example: cd "C:\Program Files\Microsoft Office\Office16" OSPPREARM.exe If successful, you will see the message: "Microsoft Office rearm successful" Microsoft Learn 3. Verifying the New Status
This method works best for Volume Licensed (Enterprise/ProPlus) versions. Retail versions (Home & Student) may only allow a single 5-day extension. ---- Ospprearm.exe Office 2016 Download