One of the easiest ways to fix Microsoft Office activation issues is using the OSPREARM.exe tool. It works by resetting the activation state of Office apps and clearing information about license status and the grace period. By doing so, you can address issues like glitches and errors related to the license status.

It’s important to note that this method is effective only if you possess a valid Office license and have not exceeded the maximum number of allowed rearms. Rearming is a process that resets the activation state, and you’re typically limited to rearming the Office apps up to five times. Exceeding this limit might result in an error message.

To run the OSPREARM.exe file:

  1. Close all the Office applications running on your computer.
  2. Press the Ctrl + Shift + Esc keys together to open Task Manager.
  3. Right-click on any Office applications working in the background and choose End task.
  4. Now, open the File Explorer.
  5. Navigate to C:\Program Files\Microsoft Office\OfficeX if you are using a 64-bit Office version.
  6. If you are using the 32-bit version, head over to C:\Program Files (x86)\Microsoft Office\OfficeX.
  7. Look for the OSPPREARM.exe file and right-click on it.
  8. Choose Run as administrator.
  9. Once the process completes, restart your computer for the changes to take effect.

Upon reboot, try activating the targeted Office app again and check if the problem is resolved.

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