Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Mac OS is Ventura 13.7.8. Using Office & Student 2021 activated in Aug 2023. One off licence. The error message is that the userid and password do mot match. Bu the same UserID and password gets me to this site. I have tried various means but Microsoft will not accept any credentials despite me having the licence in front of me. I also need to update the email address for the account - I purchased the software with an email address I no longer have access to. So any validation emails cannot be accessed, and M'Soft is not allowing me to change.