Unable to connect to ASP.Net Development Server issue

Question

I am debugging codeplex simple project. I am using

• VSTS 2008
• C#
• Windows Vista x86 Enterprise.

I have not modified any code

Answer 1

Under project settings, try specifying a different port like 64773 for example. I have encountered this issue many times and it has always worked for me.

Answer 2

Could be a number of things...try these (check the last one first)...

• Disable IPv6
• Make sure there isnt an edit in the hosts file for localhost
• Check firewall/virus settings to allow connections to/from devenv.exe
• If you can preview in the browser make sure the URL in the browser uses the same port number as the port number shown in the ASP.NET dev server taskbar icon.
• Try setting a fixed, predefined port in project properties

I got these from a couple of forums elsewhere, hopefully they can help. Good luck. Let us know what works and some more about your environment (firewall, anti virus etc) can help as well.

Answer 3

None of the above solutions worked for me, but I did find one that worked: opening up the Administrative Tools/Services window and stopping the "WebClient" service. It's something of a pain to have to disable it when trying to work with my code, but it's easier than the logging off and back on I used to have to do.

Answer 4

Error 1) Unable to connect Asp.net development server ? Answer: No way find for that error

Try 1) Step 1: Select the “Tools->External Tools” menu option in VS or Visual Web Developer. This will allow you to configure and add new menu items to your Tools menu.

Step 2: Click the “Add” button to add a new external tool menu item. Name it “WebServer on Port 8010” (or anything else you     want).

Step 3: For the “Command” textbox setting enter this value: C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\WebD ev.WebServer.EXE     (note: this points to the 

web-server that VS usually automatically runs).

Step 4: For the “Arguments” textbox setting enter this value: /port:8010 /path:$(ProjectDir) (or any port you like)

Step 5: Select the “Use Output Window” checkbox (this will prevent the command-shell window from popping up.

Once you hit apply and ok you will now have a new menu item in your “Tools” menu called “WebServer on Port 8010”. You can now   select any web project in your solution 

and then choose this menu option to launch a web-server that has a root site on port 8010 (or whatever other port you want) for the project.

You can then connect to this site in a browser by simply saying http://localhost:8010/. All root based references will work     fine.

Step 6: The last step is to configure your web project to automatically reference this web-server when you run or debug a site  instead of launching the built-in 

web-server itself. To-do this, select your web-project in the solution explorer, right click and select “property pages”. Select the “start options” setting on the left, and

under server change the radio button value from the default (which is use built-in webserver) to instead be “Use custom server”. Then set the Base URL value to be:

http://localhost:8010/

Obviously I don't know if this is the problem you had but definitely it is something similar, essentially the problem should be     that the same port used by your 

Development Server is not available because it is already used by another web server.

Try 2)

Here are the steps

   1. 'Website' Menu in your visual studio ide.
   2. select 'Start Options'
   3. enable 'Use Custom Server' radio button.
   4. Enter any URL you desire similar to 'http://localhost:8010/MyApp'

Note1: you can use any port number not only '8010' but not designated port numbers like 8080(tcpip),25(smtp),21(ftp) etc.,

Note2: you can use any name not only 'MyApp'

This solution works for sure unless your WebDev.Webserver.exe is physically corrupted.

Both of not worked after that Windows repair option remain

Answer 5

Try commenting out the following line, if it exists, in your hosts file (%windir%\System32\drivers\etc\hosts):

::1     localhost

This worked for me using Visual Studio 2008 SP1 on Vista Ultimate x64 SP2.

Answer 6

I went to the project file and changed the development server port to 1504. Well 1504 worked on another project for me, so I went with that. Hope this helps.