Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi, Aus tin
If this is a true Retail copy of Office 2021, you are correct that it can be moved to another PC you own, as long as it’s only on one device at a time and you’re not transferring it more than once within 90 days.
Since you already uninstalled it from the old laptop, it is recommended that you install from the same Microsoft account at account.microsoft.com/services, then open Word or Excel on the new laptop and check if it offers the linked Office 2021 license or a “Switch License” option.
If activation still says the limit is reached, the problem is usually the old device still being stuck in Microsoft’s activation records, not that your retail rights are invalid. Also, the old phone activation route is no longer reliable for many Office one-time purchases, so support should not keep sending you in circles on that.
Thank you for your patience in reading, I hope this information has been helpful to you.
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