I installed Windows Azure SDL V 1.3 . I tried to create a Hello World Azure Application.
I pressed F5 and error I got as below ,
I tried Ctrl+F5 ; running without debugger and did not get above exception but got service unavailable error in the browser
On this particular exception a very good discussion I found here
First suggestion was to check whether, there are two folders in C:\Windows\Microsoft.NET\Framework64 for V4.0 and rename one of the folders. I checked and I found I had only one folder for v4.0.30319 so this suggestion did not work for me.
Second suggestion was the open the command prompt and run aspnet_regiis.exe -r. I tried and again I was not lucky.
Third suggestion was to change the target framework from V4.0 to v3.5. I did that and was unlucky once again.
Fourth suggestion was to change delete the Sites element from the ServiceDefinition.csdef file. I was unlucky once again.
Fifth option was to test whether, a normal web Application with target framework 4.0 is getting published successfully in IIS or not? I tried that and I was able to publish. So my IIS was working fine.
I got frustrated and restarted and system and found everything working, I did not get that debugger exception. I have no idea what happened but this was my experience with this popular exception.