Please see if any of the workarounds in this KB help you :
http://support.microsoft.com/kb/306172
What is the exact error message returned when you attempt to debug ?
Juan T. Llibre, asp.net MVP
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"FD" <> wrote in message news:A20F9AE2-4D10-4A80-8AC4-...
> You mean VS2003 and VS2005 should not install in same machine?
> I know VS2003 worked with 1.1.
> The question is after installed VS2005 with 2.0, VS2003 will not work for
> runtime debug anymore? Otherwise, it needs some other configure to make it
> working?
> Thanks.
>
> "Alexey Smirnov" wrote:
>
>> On Jun 28, 4:00 pm, FD <F...@discussions.microsoft.com> wrote:
>> > After .NET framework 2.0 installed, aspnet_wp.exe did not work when attached
>> > it in VS2003 to debug in run time.
>> > Before, attatching it as Common Language Runtime debug, and set breakpoints
>> > in C# code, it worked properly. But after, the process did not stop at any C#
>> > breakpoint. Only IE set as script debuging works in client side.
>> > Any idea?
>> > Thanks.
>>
>> VS2003 is designed to work with 1.1
>>
>>