When you try to connect to join a domain on any Windows operating system or after entering a username and correct password, you may receive an error with the message “the specified domain either does not exist or could not be contacted”.
This “the specified domain does not exist or could not be contacted” error is usually due to invalid DNS settings on the workstation, as Active Directory requires domain DNS (not the router’s address) to function properly. The error can also occur because IPv6 does not work.
Go to Control Panel. Network and Sharing Center - Chang adapter settings - Properties and uncheck IPv6. Note that in Windows 11 this is the ONLY way to disable IPv6!
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