Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi,
To better help you and guide you to the right solution, could you please check and confirm the following details?
Is the Microsoft account that you can't access the one that has the subscription?
What is the exact error message shown when you try to sign in to your account?
Do you have any verification methods available, such as an active phone number or alternate email address?
Are you able to access the account on another device?