Cannot open database requested by the login. The login failed.

Hi,

after sophos scanning we have different critical event 3760:

SQL Database 'xxxx' on SQL Server instance 'xxxx' not found. Additional error information from SQL Server is included below.

Cannot open database "xxxx" requested by the login. The login failed.
Login failed for user 'xxxx'.

What can I do to resolve this critical event?

Thanks

Regards

FM