We had an install of Windows Server 2008. We were trialing some software, and weren’t sure if we were going to keep the OS or not. When the trial period expired, I ran slmgr -rearm. Success. We continued to run the server in trial mode.

Today I received my product keys from Microsoft, and when I tried to activate the OS I received the following error messages.



The security processor reported that the trusted data store was rearmed.

Numerous Google searches resulted in either

  • Reboot to fix
  • Reboot and end up locked out permanently
  • Reinstall

None of these options were ones I was willing to take. Here are the steps to correct the above issue that worked for me.

  1. Stop the Software Protection service.
  2. Move C:\Windows\ServiceProfiles\NetworkService\AppData\ Roaming\Microsoft\SoftwareProtectionPlatform\tokens.dat to your desktop.
  3. Move two hidden files in C:\Windows\System32\ that have the extension .C7483456-A289-439d-8115-601632D005A0 to your desktop.
  4. Start the Software Protection service.
  5. Run slmgr /dlv
  6. Stop the Software Protection service.
  7. Place tokens.dat and two hidden files back to their original locations.
  8. Install your product key by running slmgr /ipk <product key you purchased>
  9. Start the Software Protection service.
  10. Activate Windows.