Sunday, February 19, 2012

ASP.NET MVC4 Installer is incompatible with Microsoft .NET Framework 4.5

I tried installing ASP.NET MVC4 beta today, but seconds into the installation the WebPI already halted the process.
ASP.NET MVC4 Installer is incompatible with Microsoft .NET Framework 4.5
Apparently, this was documented in the ASP.NET MVC4 installation notes.
This release is not compatible with the .NET Framework 4.5 Developer Preview. You must uninstall the .NET 4.5 Developer Preview before installing the ASP.NET MVC 4 Beta.
I guess you have to be forgiving if you want to play with the early bits.

Make sure to uninstall all the .NET Framework 4.5 related stuff though. I had some pain, wasting over an hour, after only partially removing the installation.


Update: Brad Wilson answers the question why they aren't compatible.
Update: Scott Guthrie announced that the next Beta release should be compatible.

7 comments:

  1. Not only that, it seems to be incompatible with several plugins. My VS2010 was crashing, not just intermittently, but EVERY time. It was unusable. Disabled ReSharper, and that stopped the crashing, but, any time I tried to edit any JavaScript, it was still a disaster. I hit 'enter', and it took 30-40 seconds before a new line would appear. Once again, EVERY time. So, it wasn't just ReSharper.

    It's a shame, too, because I really wanted to get a head start with the new features. But, as is, it's unusable.

    ReplyDelete
    Replies
    1. Thanks for the heads up. I'm not using any plugins on this machine, I do noticed some suspicious squigly lines in my views though after the installation..

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  2. I also have plugins, including Resharper. I wonder if it would be better to wait for the visual studio 2011 beta?

    ReplyDelete
    Replies
    1. Which is available right now ;) http://www.microsoft.com/visualstudio/11/en-us

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