What should I do if the win10 preview version 10061 cannot be activated after upgrading?

  
What should I do if the win10 preview version 10061 cannot be activated after upgrading?
Microsoft yesterday pushed the win10 preview version 10061 for users to upgrade. Under normal circumstances, the system will be activated automatically after the upgrade, but there are exceptions. Some users can't activate after upgrading win10 preview version 10061 system. The following small series on everyone to bring win10 preview version 10061 upgrade can not activate the solution, together to learn it! Win10 preview version activation tutorial (with win10 key)
win10 preview version 10061 upgrade can not activate the solution
Manual installation of the key:
• Open the command prompt as administrator
• Professional users, please enter the following command:
slmgr.vbs -ipk NKJFK-GPHP7-G8C3J-P6JXR- HQRJR
• Enterprise users, please enter the following command:
slmgr.vbs -ipk PBHCJ-Q2NYD-2PX34-T2TD6-233PK
• Then press Enter.

Note: It may be necessary to restart to see the effect.

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