

If nothing else has worked, a quick phone call to Microsoft Support should do the trick.

Optionally, use the Windows Key + S, begin typing and click on Activation. Reboot your computer and go to your Control Panel, Settings, Activation and run the Activation Troubleshooter. Open Powershell or Command Prompt as admin and type in the following two lines pressing enter after each: You can find Tokens.Dat at C:WindowsSystem32SPPStore2.0. Normally, we'd suggest running the Windows Activation Troubleshooter, but first, we'd rebuild tokens.dat. Now, type in slmgr.vbs /ipk *Your Product Key Here*, reboot and see if the problem is solved.ģ: Rebuild Tokens.Dat and Run the Activation Troubleshooter Open the Command Prompt as admin again and type in slmgr.vbs /upk and you should receive a message stating Uninstalled product key successfully.

Open the Command Prompt as admin again and type in slmgr –rearm, reboot and see if the problem is solved.Ģ: Uninstall and Install Your Product Key If you could not find your product key, see Retrieve Your Windows and Office Product Keys with These Free Apps. Note here that this will not work in PowerShell. For most people, you can open an elevated Command Prompt and type in wmic path SoftwareLicensingService get OA3xOriginalProductKey. The first thing we need to do is retrieve your product key if you haven't already. TIP: Hard to fix Windows Problems? Repair/Restore Missing Windows OS Files Damaged by Malware with a few clicks
