Rearm Microsoft Office 2010 to Extend License Validity Without Activation

May 2, 2010 | Filed under Microsoft Office


When you install Microsoft Office 2010, you will have to enter the 25 character product key first before the installation will start. After installation, a Microsoft Office Activation Wizard window will open asking you to activate Office 2010 over the internet or by telephone. If you choose not to activate by clicking on the Cancel button, you can freely use it for an extra 30 days before the product becomes unlicensed. When Office 2010 becomes unlicensed, the program can still be launched but you won’t be able to make any changes and all the icons at the menu bar are grayed out and disabled.

Fortunately you can do an emergency rearm of the activation to give you another 30 days free usage before it turns unlicensed again. All you need to do is to run the file OSPPREARM.EXE file located in C:\Program Files\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform\. This is absolutely legal because the rearm file is created and given by Microsoft for free. Simply run the file and it will tell you that “Microsoft Office rearm successful”. You now have an additional 30 days to use the Office 2010 suite.

Office 2010 Rearm

You can rearm Office 2010 a maximum of 5 times which should give you 150 days plus the initial 30 days making it a total of 180 days (6 months) of Office 2010 usage without activation.


4 Responses to “Rearm Microsoft Office 2010 to Extend License Validity Without Activation”
  1. vania says:

    hello this is the problem that i have but i cant do that because i dont have the osprearm option just got some endings like .DLL What can i do

  2. Piau says:

    Hi Vania,

    try to go to directory “Program Files (x86)” instead of “Program Files”. The rest of the steps are the same. You should be able to find the program .EXE there.

    Hope this helps.

  3. Wabber says:

    Hi – thanks for the tip. I’ve also looked in the directory mentioned and I don’t have an executable OSPPREARM.EXE file. Just a couple of DLL’s. I’ve also tried searching for the file in other directories but with no luck.. any suggestions? Is it possible to download the file from MS?


  4. Missy says:

    Thanks it worked!!

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