Remove/Reinstall Dun and TCP/IP Files

You may have to remove and reinstall Dial-Up Networking and TCP/IP if:

You are unable to connect to a remote computer, remote network or the Internet using TCP/IP bound to a dial-up adapter.

You have verified the accuracy of your TCP/IP settings.

You have verified your modem is functioning correctly.

Following these steps:

Note that you should have your Windows 95 CD-ROM or your original Windows 95 floppy disks available before performing these steps.

1. If the Dial-Up Networking 1.2 Update is installed, uninstall it. If it is not installed, skip to step 2. To uninstall the Dial-Up Networking 1.2 Update, use the following steps:

a. Click Start, point to Settings, click Control Panel, and then double-click Add/Remove Programs.

b. On the Install/Uninstall tab, click Dial-Up Networking Upgrade 1.2, and then click Add/Remove.

c. When you are promted to remove the update, click Yes, and then click OK.

2. Record the configuration information for each connection in the Dial-Up Networking folder. To do so, use the following steps:

a. Double-click My Computer, and then double-click Dial-Up Networking.

b. Right-click a connection, click Properties, and then record all of the settings including the TCP/IP information. Repeat this process with another connection until you have recorded all of your connection's configuration information.

3. Delete all of your the connections from the Dial-Up Networking folder. To do so, right-click a connection, and then click Delete. Repeat this process with another connection until you have deleted all of your connections, and then close the Dial-Up Networking folder.

4. Record the configuration information for each network component in Network properties. To do so, use the following steps:

a. Click Start, point to Settings, click Control Panel, and then double-click Network.

b. Click a component on the Configuration tab, click Properties, and then record all of the component's settings. Repeat this process with another component until you have recorded all of your component's configuration information.

5. Remove all of the network components from Network properties. To do so, click a component on the Configuration tab, and then click Remove. Repeat this process until you have deleted all of the network components from Network properties, click OK, and then click Yes when you are prompted to restart your computer.

6. Uninstall Dial-Up Networking. To do so, follow these steps:

a. Click Start, point to Settings, click Control Panel, and then double-click Add/Remove Programs.

b. Click the Windows Setup tab, click Communications (the word Communications, not the checkbox), click Details, and then click the Dial-Up Networking check box to clear it.

d. Click OK, click OK, and then click Yes when you are prompted to restart your computer.

7. Restart your computer in MS-DOS Mode. To do so, click Start, click Shut Down, click Restart In MS-DOS Mode, and then click OK.

8. At the command prompt, type the following commands, pressing ENTER after each command:

cd \
cd windows\system
ren pppmac.vxd pppmac.dxv
ren rnasetup.dll rnasetup.old
ren rnaapp.exe rnaapp.eex
ren rnaui.dll rnaui.lld
ren rnanp.dll rnanp.lld
ren rnathunk.dll rnathunk.lld
ren rasapi16.dll rasapi16.lld
ren rasapi32.dll rasapi32.lld
ren rnaserv.dll rnaserv.lld
ren smmscrpt.dll smmscrpt.lld
ren smmsetup.dll smmsetup.lld
ren splitter.vxd splitter.dxv
ren spap.vxd spap.dxv
ren vgateway.vxd vgateway.dxv
ren wsock32.dll wsock32.lld
cd..
ren winsock.dll winsock.old
cd \
cd progra~1\access~1
ren slipmenu.scp slipmenu.old
ren slip.scp slip.old
Some of these files may not be present.

9. Restart your computer, and then extract the Rasapi32.dll file from your original Windows 95 disks or CD-ROM to the Windows\System folder. The Rasapi32.dll file is in the following locations:

The Win95_10.cab cabinet file on the Windows 95 CD-ROM. - The Win95_16.cab cabinet file on the Windows 95 OEM Service Release 2 (OSR2) CD-ROM. - The Win95_10.cab cabinet file on disk 10 of the original Windows 95 DMF floppy disks. - The Win95_16.cab cabinet file on disk 16 of the original Windows 95 non-DMF floppy disks.

For information about how to extract a file, see the following article in the Microsoft Knowledge Base:

ARTICLE-ID: Q129605 TITLE : How to Extract Original Compressed Windows Files

10. Extract the Winsock.dll file from your original Windows 95 disks or CD-ROM to the Windows folder. The Winsock.dll file is in the following locations

The Win95_11.cab cabinet file on the Windows 95 CD-ROM.
The Win95_18.cab cabinet file on the Windows 95 OEM Service Release 2 (OSR2) CD-ROM.
The Win95_12.cab cabinet file on disk 12 of the original Windows 95 DMF floppy disks.
The Win95_19.cab cabinet file on disk 19 of the original Windows 95 non-DMF floppy disks.

11. Extract the Wsock32.dll file from your original Windows 95 disks or CD-ROM to the Windows\System folder. The Wsock32.dll file is in the following locations

The Win95_11.cab cabinet file on the Windows 95 CD-ROM.
The Win95_18.cab cabinet file on the Windows 95 OEM Service Release 2 (OSR2) CD-ROM.
The Win95_12.cab cabinet file on disk 12 of the original Windows 95 DMF floppy disks.
The Win95_19.cab cabinet file on disk 19 of the original Windows 95 non-DMF floppy disks.

12. Reinstall Dial-Up Networking. To do so, use the following steps:

a. Click Start, point to Settings, click Control Panel, and then double-click Add/Remove Programs.

b. Click the Windows Setup tab, click Communications (the word Communications, not the checkbox), click Details, and then click the Dial-Up Networking check box to select it.

d. Click OK, click OK, and then click Yes when you are prompted to restart your computer.

NOTE: You may receive version conflict error messages during this process. If this happens, click No when you are prompted to keep a newer version of each file.

13. Reinstall the Network components. To do so, use the following steps:

a. If you have a network adapter installed, install the software for the adapter according to the manufacturer's instructions.

b. Click Start, point to Settings, click Control Panel, and then double-click Network.

c. Click the Configuration tab, click Add, click Adapter, click Add, click Microsoft in the Manufacturers box, click Dial-Up Adapter, and then click OK.

d. Click Protocol, click Add, click Microsoft in the Manufacturers box, click TCP/IP, and then click OK.

NOTE: You may receive version conflict error messages during this process. If this happens, click No when you are prompted to keep a newer version of each file.

e. If needed, add a network client. To do so, click Client, click Add, click the appropriate manufacturer, click the client you want to install, and then click OK.

NOTE: You may need to reconfigure the network components that have been reinstalled. To do so, click the network component, click Properties, add any appropriate settings, and then click OK. If needed, refer to the configuration information you recorded in step 4.

14. Restart your computer.

15. Recreate your Dial-Up Networking connections. To do so, use the following steps:

a. Double-click My Computer, double-click Dial-Up Networking, and then follow the instructions on the screen in the the Make New Connection wizard.

b. Right-click the connection that you created, click Properties, and then verify that the settings are the same as the configuration information you recorded in step 2. Repeat steps a and b until you have recreated all of your Dial-Up Networking connections.

NOTE: If after you perform the steps listed in this article you receive the following error message

Error 745: An essential file is missing. Re-install Dial-Up Networking.

Refer to the following article in the Microsoft Knowledge Base to resolve the issue:

ARTICLE-ID: Q174579

  • Back To The Top    • Back To Home