No longer able to map network drives or join domain

lskair used Ask the Experts™
Hi All,
I have a desktop which is not a member of the domain, although it's added on Active directory computers. I used to be able to connect to mapped drives and print to network printers, but it's no longer working. I'm not sure what happened, but i have tried several things, without any success. I connect over cisco vpn client and am able to ping all network resources, including the dns server. I am also able to rdp into any computer on the domain when connected on vpn. I have even tried adding the computer to the domain, but it says the "domain controller for domain x cannot be found." I have added the dns server into the host file, and am completely stumped on this. I'm on a home network over remote vpn client, and used to be able to connect to mapped drives, but no longer am able to. I don't want to replace the computer, but I'm all out of options. My laptop is also at my house, and has no problems. It's the same setup, off domain, but added into AD on domain server. No problems with network connections on laptop, just on desktop. Please advise. Thanks.
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To log into the domain and access mapped drives, you should be part of the domain. If you are connected to the same natwork as the server, change your TCP/IP settings to obtain IP and DNS, open a cmd prompt and ttype in
ipconfig /registerdns

Then try joining the domain and your mapped drives should always be there.
David AtkinTechnical Director
Top Expert 2015

It sounds as though your computer's trust relationship has been broken.

Ideally you need to re-name the PC and then join it to the domain.  Unfortunately you wont be able to do this if your using a VPN client on your PC as the connection is created after logon.

You will either need to setup a site-to-site VPN on your router and then join the domain or take it into the head office and re-join it there.

You will need Administrator privileges to do this.
1. Make sure you are using the same user account (probably a domain account) to map the drives from both the desktop and laptop.

2. Make sure there isn't any overly aggressive antivirus on the desktop that may be blocking your connection attempts to mapped drives.

3. If you've recently changed your password, your desktop may be caching the old password.

4. What method do you use to map the drives?  Are you going into the "Computer" / "Explorer" window and choosing "Tools", "Map Network Drive" ?  Are you certain of the account you use to map the drive?

5. Make sure you're not caching connections to the drives under the wrong context: Open a command window and type:
net use

Open in new window

...and hit <ENTER>

See what network resources are listed.
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Thanks for the suggestions. I have already tried many of these to no avail. Over the past month, I have removed and added computer to AD, flushed DNS, tried several various DNS settings, reinstalled AV, verified Windows firewall is off, added domain controller to host file, and several other ideas from similar EE posts. I got it to work. I changed the local admin credentials to the same as domain, and although my account is domain admin, it now works after logging in as username administrator. Local and domain credentials were the same, but resetting the local admin fixed it. Not sure how to award points since I made this change this morning before asking questions. I just hadn't logged off to test, since I knew the credentials were previously the same. Thanks for the suggestions. I'll most likely split points since any of these suggestions could help others with similar problem. The solution to this particular problem was to ensure the local administrator credential was the same as domain, although it previously was, so I'm not sure how it could have changed. Even though my user account is the same and is domain admin, I had to go into local users and groups and change it for administrator. I'm very pleased it worked. This has been very frustrating since it stopped working several months ago. Still not sure what changed to make it no longer work, but all is fixed now.
David AtkinTechnical Director
Top Expert 2015

Congrats on the Fix.  Thanks for sharing.
Glad we could help.


I had already tried what the experts were suggesting. I was able to find a solutions after months of having this particular problem. Hopefully my solution will help anyone else, since I go into detail about what specifically resolved the issue.

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