Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

I found out today that if IE security (Tools-> Internet options-> Security -> Internet or Intranet -> Custom level -> User authentication) is set to anonymous logon, you will get the above error. I didn’t find any mention for this cause so here it is.

Published Wednesday, May 26, 2004 12:55 PM by nattYGUR

Comments

# re: Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

Wednesday, May 26, 2004 5:00 AM by Frank
So what should it be set to?

# re: Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

Wednesday, May 26, 2004 5:05 AM by Natty Gur
Sorry,
Aoutomatic or prompt.

# re: Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

Friday, June 18, 2004 7:04 AM by Stanley Czyzyk
I had it on prompt and still saw the error. I changed it to automatic only in intranet zone and it worked fine.

# re: Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

Tuesday, July 13, 2004 6:22 PM by Terry
Thank you very much for the last comment. I had the same problem and after changing to automatic in Intranet it worked. It doesn't make sense that a manual prompt would fail even though the proper credentials are entered, but either way it worked.

# re: Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

Tuesday, July 27, 2004 5:55 PM by Olan Butler
On windows 2003, you must put your URL in the intranet zone site listing

# Error while trying to run project: Unable to start debugging on the web server

Friday, August 20, 2004 6:53 AM by TrackBack

# re: Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

Tuesday, July 10, 2007 5:56 AM by Majky

Thnx very much. This was my problem.

# re: Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

Monday, July 16, 2007 5:58 AM by Andy Morrell

This is great. I knew that the ASP.Net Tab had to be set to the right version but after doing some testing with security zones on friday I hadn't changed the settings back. I got this lovely error again and thanks to your post got it fixed.

Cheers

# re: Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

Tuesday, August 07, 2007 8:18 PM by Hari

Please check the Defult Web site in IIS is running  

Thanks

# re: Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

Friday, December 21, 2007 12:51 AM by Ajay

I have been working on ASP.NET 1.1 and 2.0 simultaneously on two different projects. When I shifted from 2.0 to 1.1, the debugging did not work. I changed the version on asp.net tab in Properties of the virtual directory. Now it works fine...

# re: Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

Friday, June 06, 2008 12:23 AM by Richard

That's true. I did the same thing (I changed the version) and it works...

# re: Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

Tuesday, September 16, 2008 5:15 PM by Monica

tanks it works! :)

# re: Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

Sunday, April 05, 2009 10:39 PM by ujank

just add..

i had problem like that,.. so try to setting my IE(8):

Tools-> Internet options-> security-> sites

in Local Intranet, Automatically detected intranet network the default in checked, so i try to unchecked.. and it's work..

# re: Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

Friday, April 17, 2009 7:32 AM by Rajasree

Error while trying to run project unable to start debugging on the web server.

Go to VS .net 2003 commandprompt and execute the following commands

aspnet_regiis.exe -e

aspnet_regiis.exe -r

# Error while trying to run project: Unable to start debugging on the web server. The project is not configured to be debugged. | Web Design

Friday, May 01, 2009 3:46 AM by Error while trying to run project: Unable to start debugging on the web server. The project is not configured to be debugged. | Web Design

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# re: Another cause to "Error while trying to run project: unable to start debugging on the server" for ASP.NET application.

Friday, May 22, 2009 4:25 PM by Postem

THanks i was getting the same issue over ie8 installation.

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