In this post, you’ll learn about the Windows System Error ERROR_DUP_DOMAINNAME (0x4C5)] and the reason why you are receiving the error message
How does this Error in Windows Look like?
Error Code 1221 ERROR_DUP_DOMAINNAME (0x4C5)]
Why do you receive the System Error Error Code 1221 ERROR_DUP_DOMAINNAME (0x4C5)] in Windows?
The workgroup or domain name is already in use by another computer on the network.