Can't connect new PC to domain

[psb]

I'm currently trying to add a new PC (Win10) to our office domain. We've added 8 or so computers in the past, all without hitch. However, this time I can't get it to work.

On the new laptop, the DNS has been set as the NAS IP. I can select the domain, it searches, the login pops up (which tells me it's found the DC), I enter the admin username and pw, and then it says 'That domain could not be found'.

If I change the domain name to add .local at the end, it doesn't give me the option to log in.

Any ideas?

[psb]

I should add, I've added the computer in the NAS DC settings. I've also renamed the computer to match this time (it didn't work before or after)

It's a TS253 pro

[dolbyman]

so I guess you use the nas as primary dc ? (info missing)

what firmware is on the nas ?

[psb]

Yes, that's correct.

4.3.3.0299

I'm really stumped with this one. I'm finding the NAS as I'm getting the login option, but I can't go any further. Neither my login (I'm an admin) or a user's login works.

[psb]

Any thoughts anyone? My user is waiting for this machine so I'm under a bit of pressure to find a solution. Thanks!

[dolbyman]

if the logins on the NAS have changed you have a very different problem

[psb]

The logins on the nas haven't changed. They work fine. What might therefore be the problem?

[dolbyman]

does that tip here help in any way ?

https://www.qnap.com/en/how-to/faq/arti ... controller

[psb]

i saw that page. The laptop's DNS IP is set to the NAS.
Syncronise your device with the AD server. I'm not entirely sure what that means.
I follow the steps to join the domain, I get the login page, but it won't login and says the domain can't be found.

[dolbyman]

any error logs on the QNAP when you try to authenticate ?

[psb]

no idea! Where do i find them?

I can log in to domain computers using those logins without issue.

[dolbyman]

I would check the regular QNAP logs for any entries

[psb]

I can't see anything. I can't even see attempts (I might be looking in the wrong place). I can see random attempts to log in but with different IP addresses. I assume that's something else

[psb]

Pulling my hair out with this one! We've never had issues before.

Can you just confirm, should the IP address on the computer be set to automatic, or should I set to an IP range in my domain. Subnet? Default gateway?

I currently have the Preferred DNS set to the nas IP, and alternate set to 4.4.8.8

[OneCD]

Minor point: that should be 8.8.4.4