Microsoft Project 2021 Professional helps streamline project management across industries—whether you’re planning software ...

Call Microsoft customer service at 1-800-Microsoft (642-7676) to request a replacement product key; a credit card fee may be required.

If you encounter Product Key installation error 0x80070005 in Microsoft (Office 365), Office 2019, 2016 or some other version, follow the solutions mentioned here.

We're seeing errors or capacity issues from MS' activation servers returning "This product key has already been used" errors in unpatched Office 2019 media. It reminds me of a particular time with ...