.Net 1.1

...now browsing by tag


You have been denied access to this machine, IIS6

Tuesday, November 1st, 2011

On a Windows 2003 server machine, I had to re-install IIS6; after re-installation, I added a few websites that were created prior to the re-installation back, and suddenly all the websites were automatically flagged as “Stopped”. Tried to start one of them, and got this dreadful error “You have been denied access to this machine.” I Googled this error directly and returned no much useful information except that someone suggested looking into the Windows Event Log; so I did and the underline error was like “Cannot register the URL prefix ‘http://*:80/’ for site..”

Searching the latter error message has yielded a few more useful postings about the issue. I followed the one posted at http://support.microsoft.com/kb/890015 and resolved the problem by doing these steps:

  1. Start -> Run -> Regedit
  2. Browsed to Hkey_Local_Machine\System\CurrentControlSet\Services\Http\Parameters\ListenOnlyList
  3. There were three entries under this subkey,,, and
  4. Returned to command line and run this command: net stop http
  5. Went back to registry, and removed from the ListenOnlyList all entries except
  6. Restarted http services by executing command: net start http
  7. Returned to IIS6 and started the website; this time, the site was started successfully.

Run .Net 1.1 Web Project in Windows 7/IIS7

Tuesday, November 1st, 2011

I have to develop and support three versions of .Net projects on one Windows 7 machine running IIS7. After installing VS2003, VS2008 and VS2010 on the machine, it was not without some struggling to get the legacy .Net 1.1 project to run seamlessly in IIS7, so it is worthwhile to write down a few key steps here:

  1. Created a .Net 1.1 website, called Net1_1 in IIS7 and selected Application pool ASP.Net 1.1 from the available Application pool drop-down. The ASP.Net 1.1 application pool was created automatically when Framework 1.1 was installed. If this application pool is not present, that is an indication that .Net 1.1 framework has not been installed or was not installed properly.
  2. Made sure that the ASP.Net 1.1 app pool “Managed Pipeline Mode” is “Classic”, which is default, instead of “Integrated”.
  3. At this point, I tried to browse to the .Net 1.1 app directly from IIS7, I got all sort of errors. They were caused by that ISAPI filter for .Net 1.1 was not  present by default in IIS7. To fix that, I selected the Net1_1 site -> Features View and double-clicked on “ISAPI Filters” icon; clicked on Add, gave it a name “Asp.Net 1.1″ and set “Executable” to be “C:\Windows\Microsoft.NET\Framework\v1.1.4322\aspnet_filter.dll”.
  4. Lifted the ISAPI and CGI restriction on the filter by going in to ISAPI and CGI Restrictions pane (accessed from Machine level Feature View) and changed Restriction from “Not Allowed” to “Allowed”.
  5. Almost done; I still got “Access denied” error after all these, why? Googled for “running .net 1.1 on IIS7″ and found a useful post at http://blogs.iis.net/rakkimk/archive/2008/03/20/iis7-running-asp-net-1-1-applications.aspx, which pointed me to download and install .Net framework 1.1 service pack 1. After that, I was able to bring the .Net 1.1 site back to live in IIS7!
  6. Another error, “Error while trying to run project: Unable to start debugging on the web server. Access is denied.”, arose when I tried to debug the .Net 1.1 project from VS2003. What’s going on? Well, it’s the notorious Windows 7 “Run as Administrator” thing! I had to run VS 2003 as administrator, open the project from VS2003, and then the error went away. What an inconvenience!