After installing Office 2010, user will have initial 30 days of free evaluation period before having to activate the product for lifetime continuous usage. During the early technical preview build of Office 2010, a method of rearming no-activation or activation-free period of Office 2010 was discovered. With the release of final RTM version of Office 2010, the rearm command has been made simplified.

In order to rearm Office 2010, just run the OSPPREARM command located at the following folder:

%Program Files%\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform\

For example, open a command prompt windows (in Windows 7 or Vista, open an elevated command prompt window), and type the following command:

C:\Program Files\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform\OSPPREARM.EXE

Rearm Office 2010

Note: Change the path if necessary, such as when installing 32-bit (x86) Office 2010 on 64-bit OS, where the path may be located at %ProgramFiles(x86)%, i.e. C:\Program Files (x86).

The rearm is provided in Office 2010 as a convenient for corporate customers as Microsoft now requires all installed copy of Office 2010 to be activated, including licenses sold through volume licensing. A total of 5 rearms is possible, where after reset, additional 30 days of free usage is allowed without proper activation. When timed correctly to rearm Office 2010 at last day of current cycle’s expiration days, the 5 rearms can extend and prolong the free usage of Office 2010 to half a year long.

According to TechNet, rearm function in Office 2010 is mainly for corporate customers who deploy Office 2010 via KMS activation or MAK activation, as rearm allows grace timer to be reset to 30 days of grace, freezes the grace timer, and resets the client machine ID (CMID). If the deployment image does not been rearmed, users will see notification dialog boxes at the time that the image is deployed, instead of 25-days after deployment. The 25-day grace period allows ample time for a KMS host to be found and activation to succeed. If activation is successful, users do not see notifications to activate.

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  • Anonymous User

    Use the free took KMS Activator . Search on Google for KMS Activator and download. It is a file of size approx 1MB. When you run this file, there is a possibility that your Antivirus Program will warn you of a "Potential Thread / Risk". Ignore this. Trust me, I have myself tried on my PC and did not face any problems. In the program you will find the option of Activation / Rearming, choose whichever is applicable.

  • Bob

    Does it matter when this is run? Can it be anytime during the 30-day period?

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  • Kirk

    I don't have that file in that directory.

    Just OSPPC.DLL, OSPPCEXT.DLL, osppobjs-spp-plugin-manifest-signed.xrm-ms, OSPPOBJS.DLL, OSPPSVC.EXE, and OSPPWMI.DLL

  • Peter

    Creating a shortcut will be a lot easier as it will allow the application to be selected trough the browse dialog, will give the normal icon and can also be tuned to enforce elevation.

    Other issues i see with the batchfile is the CD command without /D will not set the current drive, and "%CommonProgramFiles% could be used instead of "%ProgramFiles%common files

  • Dantv

    Sheesh people…Just pay for the products you want just like buying groceries or cars.

  • b0r1s

    just copy this code to notepad and save file with .cmd extension

    <code>cd "%programfiles%Common Filesmicrosoft sharedOfficeSoftwareProtectionPlatform"

    OSPPREARM.EXE</code