Do not download this file from third-party sites. It comes pre-installed with Office, generally located in C:\Program Files\Microsoft Office\OfficeXX\ or C:\Program Files (x86)\Microsoft Office\OfficeXX\ . What is the Purpose of ospprearm.exe?

This guide provides a comprehensive overview of what the file is, how to locate it legally, and how to use it properly. What is OSPPREARM.exe?

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

In a legitimate Office installation, this file is located in: C:\Program Files\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform\ or C:\Program Files (x86)\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform\ [1].

Which (Windows 10 or Windows 11) is installed on your computer?

and should not be used to permanently bypass Microsoft Office licensing requirements. While the rearm command can extend a trial up to six times (180 days total), continued use beyond the extended trial requires a valid license. Using this tool to circumvent Microsoft's licensing terms violates the software license agreement and may have legal consequences for commercial users.

I can provide specific command line strings to diagnose your licensing status. Share public link

The file is located in the following path, depending on the version of Office installed: C:\Program Files\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform\ or C:\Program Files\Microsoft Office\OfficeXX\ (where XX is the version number). Why You Should NOT Download OSPPREARM.exe

If the file is genuinely missing or has been corrupted by malware, the only verified way to restore it is through official Microsoft channels. Follow these safe recovery methods. Method 1: Repair the Microsoft Office Installation

: The OSPPREARM.EXE file is relatively small, typically occupying approximately 74 KB (76,480 bytes) or around 53 KB depending on the Office version.

It’s a crack or activator — it’s a legitimate Microsoft utility.

OSPPREARM stands for . It’s part of Microsoft Office Volume License editions (e.g., Office LTSC 2021, Office 2019, Office 2016). The tool:

If you are using this tool to rearm a volume-licensed product, follow these steps to use the authorized, pre-installed tool:

Malicious actors frequently bundle popular system files and activation tools with spyware, ransomware, or keyloggers. A "verified" download on a forum or third-party blog is often a disguised virus.

Once you have located ospprearm.exe on your system, it is crucial to verify that it is the legitimate Microsoft version, especially if you have ever downloaded any Office components from third‑party sites.

OSPPREARM.exe Download: Verified Safe Sources and Usage Guide (2026)

OSPPREARM.EXE is an official Microsoft command-line utility used to reset (rearm) the activation grace period for volume-licensed versions of Microsoft Office. It is not a separate download; rather, it is a built-in component of the Office Software Protection Platform found within the Office installation directory. Super User Verification & Purpose Official Tool