Hello Wajiha Asif,
Thanks for your question
This is due to inactivity on your tenant for 200 or more days.
If you need to reactivate your tenant:
- The tenant administrator can reach out to Microsoft, see the global support phone numbers.
See this article that describles the scenario perfectly: https://learn.microsoft.com/en-us/entra/fundamentals/inaccessible-tenant
You can mark it 'Accept Answer' and 'Upvote' if this helped you
Regards,
Abiola