Problem
DWEX Portal Application Services setup fails with the error below

{SQLERROR}: {SQLSTATE: 4200} Windows NT user or group 'example.com\john' not found. Check the name again.


Cause
A (fully qualified) USERDNSDOMAIN is entered in the Domain textfield during setup instead of the USERDOMAIN


Solution
Open a command and run set userdomain This gives you somthing like USERDOMAIN=YOURDOMAIN

Now use YOURDOMAIN instead of Example.com in the logon Information screen of the DWEX Portal Application Services setup