Joining a Windows 10 machine to an Synology Active Directory Domain

Question

I'm trying to join a Windows 10 Professional machine to a Synology Active Directory Domain. I've reloaded Window 10 Pro several times and continue to get the same results.

I'm getting the following messages:

The join operation was not successful. This could be cause an existing computer account having name "ABCES" was previously created using a different set of credentials. Use a different computer name, or contract your administrator to remove any stale conflicting account. The error was: Access denied.

In the above case I've used several different computer names and continue to get the same message. I've been able to join other non-Windows machines to the Domain with no issues.

I've also tried joining the domain using the "Network ID" button and I get the following message:

Your computer could no be joined to the domain because the following error has occurred: This user can't sign in because this account is currently disabled.

In this above case the account used to join the domain is not disabled or lock in any way that I can see.

What am i doing wrong or what could be causing this to occur? All of the latest service packs have been applied. Running Windows 10 Version 1901 (OS Build 18363.1379).

Thanks

Thanks

Answer 1

I'd reach out to vendor for support.
https://www.synology.com/en-us/support

--please don't forget to Accept as answer if the reply is helpful--

Answer 2

Hi,
Windows clients log the details of domain join operations in the %windir%\debug\Netsetup.log file.
You can check more details from the log.
How to troubleshoot errors that occur when you join Windows-based computers to a domain
https://learn.microsoft.com/en-us/troubleshoot/windows-server/identity/troubleshoot-errors-join-computer-to-domain

Best Regards,

Answer 3

Hi,

Make sure you use a unique user name in Synology Active Directory for the domain. It could cause conflicts with you windows local login.

Regards

Answer 4

I'm assuming that by "Synology Active Directory" that you mean the "Synology Directory Server"?

Try deleting the computer account "ABCES" in "Synology Directory Server" on the Synology NAS and try joining the domain again, and it should recreate a new computer account.

Remember that in a regular domain, you have your login account as well as a computer account.

On a regular Microsoft Windows AD Domain, you could go into "Active Directory Users and Computers" and right click on the computer account and reset the account, but that isn't an option with "Synology Directory Server", so deleting the computer account and letting it recreate a new computer account should work.