C:\Program Files\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform

Note: Replace "Office16" with your version (e.g., Office15 for Office 2013). What if it’s missing or broken?

Sometimes a simple Windows Update will patch errors related to the Software Protection Platform. A Note on "Free Trials"

If repair fails, the best way to get a clean copy of the file is to uninstall and reinstall Office through your Microsoft Account portal Check for Updates:

Searching for a "free download" of ospprearm.exe can be tricky because it is not a standalone app you typically download. It is a built-in utility that comes with Microsoft Office. Microsoft Learn