Windows clients can‘t bind to domain using NTLMv2 if the PDC‘s domain is lower case

Issue or symptom

Windows clients can't bind to domain using NTLMv2 if the PDC's domain is lower case.

Solution

Use one of these workarounds:

• Use an uppercase domain name (Server Admin -> Windows -> Settings -> General tab)
  
  or
  
  
• When binding the Windows client to the PDC, specify the admin name with the domain name in upper case (DOMAIN\\diradmin, for example)