Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi,
To better assist you and guide you to the right solution, could you please check and confirm the following details?
What is the exact error message you receive when you try to open your Office apps?
Go to: https://account.microsoft.com/services
Can you confirm whether your license or subscription appears there and is listed as active?
If not, it may be linked to a different Microsoft account. Please sign in to all of your Microsoft accounts using the link above and check if the license is associated with any of them.