I had been getting the errors 8026 and 8062, "
LDAP Bind was unsuccessful on directory dc.domain.com for distinguished name ''. Directory returned error:[0x51] Server Down. DC=,DC=com
And I checked out all of the other suggestions. When i went into the RUS to select a DC, it won't allow me to select what I consider to be my Primary DC. It resolves the other one, but not this one. I successfully pinged the DC, same with nslookup. I had been having DNS issues, but what can I do to resolve this?