C:\Program Files\Microsoft Office\Office16 (the folder number changes based on the version, e.g., Office14 for Office 2010).
To use the tool to fix a "Product Activation Failed" error or extend your trial, follow these steps: (Word, Excel, etc.). Open the Command Prompt as an Administrator .
Some versions store it in C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform . How to Use Ospprearm.exe Safely Download BEST Ospprearm.exe
(Office Software Protection Platform Rearm) is an official Microsoft command-line utility used to reset the activation timer for volume-licensed versions of Office.
It is primarily designed for IT administrators to prepare workstation images (like sysprep) or troubleshoot volume licensing issues. If successful, you will see a message:
If successful, you will see a message: . Common Issues and Safety Risks
It allows users to extend an Office evaluation period by resetting the 30-day grace timer. it is typically located here:
Navigate to the correct folder using the cd command, for example: cd "C:\Program Files\Microsoft Office\Office16" Type ospprearm.exe and press .
Most versions allow you to run this command up to five times, potentially giving you a total of 180 days of evaluation. Where to Find Ospprearm.exe
Instead of downloading it, you can find the file in your existing Office installation directory. Depending on your version and architecture (32-bit vs 64-bit), it is typically located here: