ASP.NET 4.5.512 has not been registered on the web server. You need to manually configure your Web server.
Note:
1) I ran aspnet_regiis -i
at C:\Windows\Microsoft.NET\Framework\v4.0.30319
, now I'm getting 6 message boxes with same above error message
2) I tried turing on IIS-ASPNET45
in Turn Windows Features On/Off
under Internet Information Services-> World Wide Web Services -> Application Development Features -> ASP.NET 4.5
.
If you're running Visual Studio 2012, the following update may fix your problem. https://support.microsoft.com/en-us/kb/3002339
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