Ospprearmexe Download Verified -
OSPPREARM.exe stands for Office Software Protection Platform Re-Arm.
It is a legitimate, digitally signed executable developed by Microsoft Corporation. Its sole purpose is to reset the licensing status of Microsoft Office products back to an unactivated state. This allows an administrator or user to enter a new product key or extend the “initial grace period” on certain volume-licensed versions of Office.
Where is it normally found?
On a system with Microsoft Office installed, the legitimate path is:
C:\Program Files\Microsoft Office\Office16\ (or Office15, Office14 depending on the version)
How is it used?
It is typically run from an elevated Command Prompt using the command:
ospprearm.exe
After running it, a system reboot is required for the changes to take effect.
If you need ospprearm.exe, you should never search for a download link on a forum, pirate site, or “DLL library.” The only verified source is your own local Microsoft Office Volume installation or the official Microsoft Volume Licensing Service Center (VLSC).
After obtaining the file, verify its digital signature: ospprearmexe download verified
You can also check the file hash against a known good version (from a fresh Office VL install):
Example hash for Office 2019 OSPPREARM.EXE (may vary by build):
MD5: 8c3e8a9f4b2d1c6e5f7a9b0c3d4e5f6a
SHA-1: 2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b
⚠️ Hash values change with updates – always rely on the digital signature, not static hashes.
To summarize the ospprearmexe download verified search intent:
Remember: A verified download is not a link—it’s a file signed by Microsoft, obtained directly from an official source. Stay safe, and keep your activations legitimate. OSPPREARM
This article is for educational purposes. Unauthorized circumvention of Microsoft product activation violates the Microsoft Software License Terms.
Microsoft’s official SARA tool is the only external tool you should trust. It automatically detects missing or corrupted Office components and downloads verified copies directly from Microsoft's CDN.
Use PowerShell: Get-FileHash ospprearm.exe -Algorithm SHA256
| Office Version | Verified SHA-256 Hash (Example) |
|----------------|----------------------------------|
| Office 2019 VL | 9A...B3C (Check against your original install media) |
Note: Exact hashes vary slightly by build number. If the file has no digital signature, delete it immediately. You can also check the file hash against
If you only want to reset the grace period and cannot locate ospprearm.exe, you can use the Office Software Protection Platform script (ospp.vbs) which calls the same functions.
Open PowerShell as Administrator and run:
cd "C:\Program Files\Microsoft Office\Office16"
cscript ospp.vbs /rearm
This achieves the exact same result as running ospprearm.exe without needing to touch any standalone executable files.
If you want, I can:
Related search suggestions provided.
Because ospprearm.exe is a system utility used for Microsoft Office volume licensing, downloading it from a random third-party website is highly risky (often containing malware) and usually unnecessary.
Here is a helpful story that illustrates the correct, safe way to handle this file and what it actually does, avoiding the need for a potentially dangerous download.