Last post Sep 14, 2008 06:42 AM by eng.ruilima
Nov 28, 2006 12:49 PM|Sanjay72|LINK
I am unable to debug web application, I get following error message:
Auto-attach to process ' w3wp.exe' on machine '6LX31C1' failed. Error code 0x80040033
OS: XP pro x64 Edition V2003 SP1
I have only .net V1.1 framework
Win app debugging works fine
Also installed v1.1 using
I looked at following but still couldn’t fix the issue:
Any help is appreciated…
Nov 28, 2006 01:25 PM|vcsjones|LINK
I beleive you need IIS set to run in 32-bit mode for debugging to work in ASP.NET 1.1. This explains how to set IIS to run in 32-bit mode:
Nov 28, 2006 02:35 PM|Sanjay72|LINK
Jan 12, 2007 06:38 PM|NucleoSolutions|LINK
Just in case you are still having this issue or for future reference. Make sure you are using the right version of .Net (1.1.x).
Jul 12, 2007 04:32 AM|LesioS|LINK
I had the same problem: couldn't start debugging on ASP.NET 1.1 site (I've on my machine .NET Frameworks 1.1, 2.0 and 3.0[;)]). I've checked IIS configutarion for this site and found ASP.NET 2.0 on it. After changing back to 1.1 it has run.
Jan 20, 2008 10:18 AM|The Riddler|LINK
I too have been suffering from the same problem as described by Sanjay72.
Developing and maintaining an ASP.Net application on Visual Studio 2003, ASP.Net v1.1.4322 and an XP 64-bit machine.
I've trawled the internet and have tried all the following:
* uninstalling other ASP.Net versions and reinstalling v1.1.4322 (lots of times!)
* I've set permissions so that virtually every account has access to everything and is a memeber of the Administrators and Debugger Users group.
Is anybody anywhere of anything else that might be behind this?
It had all worked OK for months until yesterday!
Sep 14, 2008 06:42 AM|eng.ruilima|LINK
Windows Vista Tip:
Install SP1 of .NET 1.1
Enable IIS6 Compatibility
aspnet_regiis -ir (it will create the ASPNet 1.1 Application Pool)
enable the v1.1, go to ISAPI and CGI Restrictions on the server.
Run as Administrator (ShortCut properties -> Shortcut -> Advanced... -> Run as Administrator)
Compatibility (XP SP2):
Disable Visual Themes
Disable Desktop Composition
Disable display scaling on high DPI settings
Ready to run and debug aspnet 1.1 on VISTA OS!!!!!