If you are working on a Office 2010 deployment and no KMS server has been setup you may run out of the grace period. Office 2010 now requires product activation similar to Windows Vista/7.

The following Microsoft Office Activation Wizard may appear.

This copy of Microsoft Office is not activated.

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As I don’t want to activate the installation at this moment I will use the Office 2010 rearm feature available.

  • Start a elevated command prompt (cmd.exe).
  • Go to C:\Program Files\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform
  • Run OSPPREARM.EXE

After the OSPPREARM.EXE has run you will get the “Microsoft Office rearm successful” message.

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