DNS, Vista, Remote Desktop issue
We have a Vista Business HP tabletthat up until about two weeks ago would work fine when the userused the VPN client and Remote Desktop to reach it.About two weeks ago the user started to get errors when using remote desktop and the computer name. She can remote using the ip address. After some troubleshooting, I noticed that the computer is showing up in DNS on the local domain controller four time with four different ip addresses. In another off site domain controller it shows up only once. I have done a flush cache and re-registered several times and the four entries keep coming back. When I do an ip config it only shows the one correct address. I have removed network adapters - wireless and ethernet, ran windows update, removed the vpn client (two of the ip addresses that show up are not from our range). I was going to to a system restore, but it only gives me restore points back to the 14th which is not far enough back.
February 21st, 2008 11:56pm
Hi 000stewie, I would like to confirm if the four DNS records registered in DNS Server are all A record. Please perform the following actions to verify if the records are updated from the Windows Vista machine: 1. Capture network packets:1) Download NetMon3.1 from the following website and install it on both the Windows Vista machine and DNS Server:http://www.microsoft.com/downloads/details.aspx?FamilyID=18b1d59d-f4d8-4213-8d17-2f6dde7d7aac&DisplayLang=en2) Log onto the machines with the account that is a member of administrators group, right-click the Netmon icon and select Run as Administrator to launch NetMon3.1.3) In the Microsoft Network Monitor 3.1 window, click Create a new capture tab4) In the new tab, select all the Network Adapters in the Select Networks window.5) On the DNS Server, delete the DNS records related to the Windows Vsita machine.5) After that, press F10 to start NetMon.Note. Please start NetMon on both machines.6) On the Windows Vista machine, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.7) In the Command Prompt, type ipconfig /registerdns and press Enter.8) Once the DNS records update on the DNS Server again, go back to the Netmon window and press F11 to stop the Netmon on both machines.9) Press Ctrl+S to save the netmon files. 2. Use the command ipconfig /all to collect IP Configuration on Windows Vista machine. After that, please zip and upload the above information to the following space: https://sftasia.one.microsoft.com/choosetransfer.aspx?key=34cd186f-034b-4ca1-95f3-d205e55b2f97 Password: KeyI2SUrrTQm98u Meanwhile, I suggest checking if there are two or more computers have the same computer name in this environment. Sincerely, Joson Zhou Microsoft Online Community Support
February 26th, 2008 12:32pm
They do show up in DNS as host A records. I now have 6 for the same machine - at least two are ip addresses that the machine no longer has. I deleted the records in DNS, removed any old DHCP lease records for this machine, clear the DNS cache on the tablet and then re-register and the 6 records show up for the one tablet. We definately do not have any other computers with the same name on the network. I will run netmon when I get a chance, but the user is on the machine today.
March 3rd, 2008 6:21pm
Hi 000stewie, I have checked the Netmon file and found that the Windows Vista machine does attempt to update other IP addresses besides the correct one ##.##.##.134 to the DNS server. They are: ##.##.##.134 ##.##.##.3 ##.##.##.10 ##.##.##.29 ##.##.##.142 ##.##.##.36 I suspect that there are some invalid interfaces on the machine, which can be the cause of the issue. As a result, lets check the following points: 1. Is there any disabled Internet Connection on the machine? 2. Open Registry Editor (regedit.exe), click Edit, click Find, and type the incorrect IP addresses in the Find dialog box to check if they are existing in the registry. As the IP addresses may be automatically assigned by DHCP server, they may have been changed now so that you may not be able to find out them this time. In this case, we need to enable the Netmon again in order to check the latest IP addresses. Here are the detailed steps: ========================================== 1. Start Netmon:1.1. Log onto the machines with the account that is a member of administrators group, right-click the Netmon icon and select Run as Administrator to launch NetMon3.1. 1.2. In the Microsoft Network Monitor 3.1 window, click Create a new capture tab1.3. In the new tab, select all the Network Adapters in the Select Networks window. 2. Reproduce the issue:2.1. On the Windows Vista machine, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.2.2. In the Command Prompt, type ipconfig /registerdns and press Enter.2.3. Once the DNS records update on the DNS Server again, go back to the Netmon window and press F11 to stop the Netmon.2.4. Press Ctrl+S to save the netmon files. 3. Export the registry key:3.1. Open Registry Editor (regedit.exe), locate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ Tcpip.3.2. Right-click the Tcpip, and select Export to export the registry key. 4. After that, please upload the Netmon file and Registry key to the same space:https://sftasia.one.microsoft.com/choosetransfer.aspx?key=34cd186f-034b-4ca1-95f3-d205e55b2f97 Password: KeyI2SUrrTQm98u I will help to check it. Sincerely, Joson Zhou Microsoft Online Community Support
March 5th, 2008 6:59am
If there is a registry key for one of the ip addresses, can I just delete it?
March 6th, 2008 5:37pm
Hi 000stewie, It depends on where the value is stored. Please let me know the exact registry key before deleting them. Thanks.
March 10th, 2008 6:47am
Can you please edit the post above and remove the ip addresses from publication. Thanks!
March 10th, 2008 9:13pm
Done. Is it ok now?Sorry for any inconvenient.
March 11th, 2008 5:21am
Thank you - that is fine. I have sent the additional files that you requested and a screenshot of the network connections.
March 13th, 2008 12:17am
I sent you the additional files you asked for - any suggestions?
March 25th, 2008 6:42pm