Windows 11 Key for Windows 11 Pro?

[Windows Server]

HelloI have uninstalled the activation key for my Windows 11 computer and have tried to use that key to activate my Windows 11 Pro. The key is not recognized as a valid key. I thought it might not be working because I tried to activate my new OS immediately after uninstalling the key so I waited a couple of days. Still no luck.I thought that I could use my old key for the Pro version. Can this be done or will I need to purchase a new key?Thanks.

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