By default, you can rearm Microsoft Office . Each rearm resets the 30-day grace period, giving you a maximum of approximately 150 days of trial usage.
If you are reading this because you are scripting an image deployment, ensure the SkipRearm setting in your Unattend.xml is handled correctly. If you are manually troubleshooting a client machine, use ospp.vbs /act first. Use ospprearm.exe only if the licensing tokens are genuinely corrupted or the grace period has failed to initialize correctly.
It is primarily used by system administrators to reset the activation timer (typically up to 5 times) to extend the "grace period" before volume activation is required. 2. Why "Verified" Downloads are Dangerous ospprearmexe download verified
Click to ensure the signature is valid and untampered with.
This post provides a safe, verified guide for locating the ospprearm.exe file, which is used to reset the activation grace period for volume-licensed versions of Microsoft Office. By default, you can rearm Microsoft Office
If the file is located in its default installation directory, it is verified and safe.
A quick Google search reveals dozens of download sites offering ospprearm.exe . Most are dangerous because: If you are manually troubleshooting a client machine,
OSPPREARM.EXE—short for —is a legitimate command-line utility developed and digitally signed by Microsoft Corporation. It is included with volume-licensed editions of Microsoft Office, as well as certain trial and evaluation versions of the software.
| Error | Likely Cause | Solution | |-------|--------------|----------| | "There was an error when trying to rearm Office" | Not running as administrator | Right-click Command Prompt and select "Run as administrator" | | "OSPPREARM.EXE is not recognized" | Wrong directory path | Verify the correct Office installation folder for your version | | File not found on system | Corrupted Office installation | Repair or reinstall Microsoft Office from official sources | | Rearm count exhausted | All 5 rearms used | You must activate Office with a valid product key |
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