How to Manually Remove Proxy Server 1.0 and 2.0

ID: Q186815

The information in this article applies to:
IMPORTANT: This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore it if a problem occurs. For information about how to do this, view the "Restoring the Registry" Help topic in Regedit.exe or the "Restoring a Registry Key" Help topic in Regedt32.exe.

SYMPTOMS

In some cases, the uninstall program may fail when you try to remove Microsoft Proxy Server 1.0 or 2.0.


WORKAROUND

To work around this problem, do the following:

  1. Find and delete the following directories on the local hard disk drive, if they exist:
    \urlcache
    \msp
    \winnt\system32\msplogs
    \inetpub\scripts\proxy


  2. Find and delete the following file, if it exists:
    \winnt\system32\drivers\ipfltdrv.sys


  3. Delete the following registry keys, if they exist:


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. If you are running Windows NT, you should also update your Emergency Repair Disk (ERD).

a. Start Registry Editor (Regedt32.exe).

b. For each of the following registry keys, click the key to highlight it, and then select Delete on the Edit menu:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3Proxy

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WSPSrv

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3Pcache

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\IpFilterDriver

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mspadmin

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mailalrt

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Currentversion \Uninstall Microsoft Proxy Server

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\W3Proxy
c. Quit Registry Editor.

Delete the following registry value, if it exists:

a. Start Registry Editor (Regedt32.exe).

b. Locate the <MSP@v2.0.372.12> value for Proxy Server 2.0 or the <MSP@v1.0.194.2> value for Proxy Server 1.0 under the following key in the registry:
HKEY_LOCAL_MACHINE\Software\Microsoft\MS Setup (ACME)\Table Files\
c. Click to highlight this value, and select Delete on the Edit menu.

d. Quit Registry Editor.

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Issue type        : kbhowto kbprb

Last Reviewed: March 8, 1999