Windows cannot verify that the user name is unique because the following error occurred while contacting the global catalog:....after changing DC name.

Hi to all,

I'm having an issue with my DC.

I have two DC's in my domain: DC01 and DC02.

I changed the names for both DC's and now I'm having the following error when I try to create a new user :Windows cannot verify that the user name is unique because the following error occurred while contacting the global catalog:Logon failure: unknown user name or bad password.

Please can you help me.

Thanks.