VS2010: "Unable to start debugging"
Solution 1
Just a side note. I got a similar error in VS2013 trying to attach to chrome the error was:
Unable to attach the application 'chrome.exe' using XXX The 32 bit version of the visual studio remote debugging monitor (msvsmon.exe) cannot be used to debug 64 bit processes or 64-bit dumps. Please use the 64-bit version instead
I had to untick "Silverlight" in the web project Web section:
Solution 2
I received this same message, preventing my web project from running and opening in a browser. Turns out another developer had made a change in the project properties to "Use Custom Web Server" which pointed to an external URL instead of to the web server on my machine.
Try this:
Right-click your project in Solution Explorer - click Properties - click Web tab - under Servers click "Use Visual Studio Development Server". For reference the usual port value here is "Auto-assign Port". Best of luck.
Admin
Updated on June 26, 2022Comments
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Admin almost 2 years
My VS2010 debugger has stopped functioning suddenly today on my Dell M4500. I had reinstalled VS2008 SP1 last week, but the 2010 debugger ran fine since then, so I'm not sure its the culprit. I can launch a project once just fine, & afterwards I get a message that reads "Unable to start debugging," without any error # or explanation of why. Doing IISRESET doesn't help, I get the same message until I close VS with the entire solution and reload it. Here are some things I've tried:
- Verified I have the latest project files
- Repair option for VS2010
- Complete uninstall/reinstall VS2010
- Replaced Web.config with known good copy
- Added localhost to the list of trusted sites in IE
- Performed \aspnet_regiis -i in the 2.0 & 4.0 directories
- Through IIS Services Mgr -> Default Website:
- verified Enable HTTP Keep-alives checked
- placed check in Integrated Windows authentication
- verified Enable HTTP Keep-alives checked
- Ensured Debug on "Any CPU" is selected
- Tried building to Platform targets "Any CPU," "x86" & "x64"
- Added DisableLoopbackCheck registry key entry in
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
- Tested under both IIS & VS Development web server
Does anybody have any suggestions I can also try? Any help is very greatly appreciated!
- Verified I have the latest project files
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CodeCaster over 10 yearsYou just copied this answer including typos. -1.