I have website configured in IIS 7.5 i want to edit some of

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  Francis Susaimichael9y agoPosted Mar 12, 2017, 8:35 PM

  There are various reasons behid the error 500.19. take a look at the below url;

  http://stackoverflow.com/questions/929131/how-do-i-resolve-http-error-500-19-internal-server-error-on-iis7-0 
• MT

  Mark Tabor9y agoPosted Mar 12, 2017, 12:18 PM

  I have checkedd it , on IIS it is set to asp.net 4.0 Classic and on web.config it is set as target framework ="4.0" 

  when i explore it using IIS it gives error like

  "

  HTTP Error 500.19 - Internal Server Error

  The requested page cannot be accessed because the related configuration data for the page is invalid.

  "

  and on visual studio it gives  below error 

  "Error 4 Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive.C:\HostingSpaces\admin1\kk.hhh.pro\wwwroot\web.config 33" 
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  Francis Susaimichael9y agoPosted Mar 12, 2017, 10:08 AM

  This typically happens when you have an attribute of targetFramework="4.0" in the web.config but the App Pool is set to run ASP.NET 2.0. The targetFramework attribute is entirely unrecognized by ASP.NET 2.0 - so changing it to 2.0 won't have the desired effect.

  Contact Support / Your Administrator and have the AppPool switched to 4.0.

  Courtesy:

  http://stackoverflow.com/questions/7530725/unrecognized-attribute-targetframework-note-that-attribute-names-are-case-sen