I just reinstalled my OS and installed everything again, and found that whenever I open my project, I get an error message.
The project type is not supported by this setting.
Can someone explain why this happened when nothing happens, when I install.
The problem, I found that this is error code 1603, and later I found an alternative to installing MVC3, you can read the whole post:
1603 Installation error in MVC 3.
delete my account
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