Summary
Error message during system health check: Database Connection Error: failed Open Connection: Login failed for user 'DOMAIN\IUSR_METRO' when we are using Windows Authentication
Error
Running the system health check we got the following error message from PC server database connection check:
"Database Connection Error: failed Open Connection: Login failed for user 'DOMAIN\IUSR_METRO'".
Cause
When we install the database and we use Windows authentication instead of SQL authentication.
Fix
In order to resolved this issue
1. Add the IUSR_METRO into the Database--> Logins
2. Assign the db_owner permissions