7.x Documentation

features description for

Mod_023: Cannot login to the database as a Domain-User


You are logged in to Windows as Domain-User and in you have created this windows user. However, if you try to login to as Windows (Domain) user (when logging in you check “Use Windows NT integrated Security” flag), this error message appears:
“Failed to authorize user. Either user name or password is not valid for the database”.



The most likely reason is that your Domain-User name begins with a small letter and the Windows-User name that you have added to begins with capital letter. Or vice versa.


  1. You can change the name of the Windows Domain-User
  2. Change the name of the Windows user in via SQL Server.