How to Log On to a Windows NT Domain Using a PPTP Connection (176575)

MORE INFORMATION

When you establish a Dial-Up Networking (DUN) connection using PPTP, you are required to provide a valid Windows NT user name and password. However, when you provide this user name and password you are not automatically logged on to the Windows NT domain. If you are not logged on to the Windows NT domain, you may not have access to some network resources. For example, you may be prompted to provide a user name and password when you attempt to access a network resource. In addition, your logon script is not processed when you establish the PPTP connection.

To log on to your Windows NT domain using PPTP, you must log on to the domain after establishing the PPTP connection. To do so, use the appropriate method:

NOTE: These procedures assume all of the following conditions exist:

• You have created a Dial-Up Networking phone book entry to connect to your ISP.
• You have created a Dial-Up Networking phone book entry to connect to your PPTP server.
• Your computer has a valid machine account on the Windows NT domain.

For additional information about configuring PPTP, see the following article in the Microsoft Knowledge Base:

ARTICLE-ID: 161410
TITLE : How to Set Up a Private Network Over the Internet Using PPTP

ARTICLE-ID: 172227
TITLE : Network Address Translators Can Block Netlogon Traffic

If Your Computer Has Not Joined the Windows NT Domain

1. Log on to your computer using a local user account with administrator rights.
2. Configure your registry so that DUN connections are preserved after you log off. To do so, use the following steps.
   
   WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.
   
   For information about how to edit the registry, view the "Changing Keys And Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it.
   
   
   1. Add a new string value named KeepRasConnections to the following registry key:
      HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlog
   2. Set the string value for KeepRasConnections to 1.
3. Use Dial-Up Networking to connect to your ISP.
4. Use Dial-Up Networking to connect to your PPTP server.
5. Click Start, point to Settings, click Control Panel, and then double-click Network.
6. On the Identification tab, click Change, click Domain, type your Windows NT domain name in the Domain box, and then click OK.
7. If you receive a "Welcome" message from the domain, click OK.
8. Click Close.
9. When you are prompted to restart your computer, click Yes.
10. Log on to your computer using a local user account with administrator rights.
11. Use Dial-Up Networking to connect to your ISP.
12. Click Start, click Shut Down, click "Close all programs and log on as a different user," and then click OK. The Dial-Up Networking connection to your ISP should remain connected.
13. When you are prompted, press CTRL+ALT+DELETE to log on.
14. Type your domain user name and password. In the Domain box, click the name of your Windows NT domain. Click the Logon Using Dial-Up Networking check box to select it, and then click OK.
15. In the Phone Book Entry To Dial box, click the phone book entry that you use to connect to your PPTP server, and then click Dial. Confirm your user name, password, and domain, and then click OK.

If Your Computer Has Already Joined the Windows NT Domain

1. Log on to your computer using a local account with administrator rights.
2. Configure your registry so that DUN connections are preserved after you log off. To do so, follow these steps:
   
   WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.
   
   For information about how to edit the registry, view the "Changing Keys And Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it.
   
   
   1. Add a new string value named KeepRasConnections to the following registry key:
      HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlog
   2. Set the string value for KeepRasConnections to 1.
3. Use Dial-Up Networking to connect to your ISP.
4. Click Start, click Shut Down, click "Close all programs and log on as a different user," and then click OK. The Dial-Up Networking connection to your ISP should remain connected.
5. When you are prompted, press CTRL+ALT+DELETE to log on.
6. Type your domain user name and password. In the Domain box, click the name of your Windows NT domain. Click the Logon Using Dial-Up Networking check box to select it, and then click OK.
7. In the Phone Book Entry To Dial box, click the phone book entry that you use to connect to your PPTP server, and then click Dial. Confirm your user name, password, and domain, and then click OK.