1. Modify the registry
HKEY_LOCAL_MACHINE > SYSTEM > CurrentControlSet > Services > Netlogon > Parameters.
In the right pane, locate
AllowSingleLabelDnsDomain key and double-click it. Set its value data to 1 and save changes.
If the mentioned key isn’t available,
right-click the right pane and choose New > DWORD (32-bit value) and set the name of the new DWORD to AllowSingleLabelDnsDomain
Now repeat the previous step.
Exit Registry Editor and Restart PC and try to join the domain again.
2. Disable Antivirus
Disable your antivirus and firewall protection temporarily and check if that helps.
3. Enable SMB v1
Press Windows Key + S and type windows features. Select Turn Windows Features on or Off.
A new window will now appear. Locate SMB 1.0/CIFS File Sharing Support and make sure it’s checked.
Now click OK to save changes and restart your PC.
Once your PC restarts, check if the problem is still there.
4. Disable IPv6 on the client side
Open Network and Sharing Center and choose Change adapter settings.
Locate your network adapter and right-click it. Choose Properties from the menu.
Locate Internet Protocol Version 6 (TCP/IPv6) and uncheck it. Now click OK to save changes.