XP SP2 localhost virtualhost stops working

iantresman

Since installing Windows XP Service Pack 2, only localhost IP 127.0.0.1 responds on my PC. Other localhost IP addresses, such as 127.0.0.22 do not. Any ideas how I can enable 127.0.0.*

Since I was only using the IP address, I did not make any changes to the Windows Hosts file in C:\WINDOWS\system32\drivers\etc

I'm running Apache 1.3.29 on Windows XP, with additions to httpd.conf, such as:

<virtualhost 127.0.0.22>
ServerName localhost
ServerAdmin admin@localhost
DocumentRoot "C:\web\test"
</virtualhost>

Regards,
Ian Tresman
Derby, UK

iantresman

This may be the cause, though as of now, it is not online yet. But it maybe by the time your read this.

From: Greg Lirette [MSFT]
Date: 2004-08-14 22:19:13 PST
Subject: Windows XP SP2 may be unable to make TCP connections to loopback address other than 127.0.0.1
Newsgroups: microsoft.public.platformsdk.networking

With Windows XP SP2 some applications which connect to the loop back address range may not function as expected. This is because Windows XP SP2 prevents connections to the loop back address range for any address other than 127.0.0.1.

Microsoft support has an update available which addresses this issue and is available by calling Microsoft support. Reference the fix for KB 884020 [Search here].

The fix contains the following file info
13-Aug-2004 22:50 5.1.2600.2505 359,040 Tcpip.sys

Thank you,
Greg Lirette

Microsoft Corporation Critical Problem Resolution

iantresman

Microsoft support has an update available which addresses this issue and is available by calling Microsoft support. Reference the fix for KB 884020 [Search here].

So I called, and was eventually sent a link to a "hotfix":

Hotfix file: ms-hotfix-196897_ENU_i386_zip.exe
Contains:    WindowsXP-KB884020-x86-enu.exe         (Run this file to install)
Also has:    WindowsXP-KB884020-x86-Symbols-enu.exe (for debugging purposes).

Installation set-up a restore point, and required restarting my PC to finish.

And I'm, pleased to say that this fixes the problem. I now have restored access to loopback localhost addresses, 127.0.0.1, 127.0.0.5, etc.

Regards,
Ian Tresman