This should be no different then if your old machine name died and you activated Office on a new computer. In other words, just log into your MS Account --> deactivate the old machine name --> activate Office again at which point it should pick up the new machine name
PC ID
Anonymous
MS assigns Office based on the name of the PC. If I changed the name of the PC and MS still shows it under the manufacturer's id, is there a way for me to find that id after I've changed the PC name?
Windows for home | Windows 10 | Settings
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