Issue #400 - Server Error in '/XXXXX' Application.
Server Error in 'XXXXXXXX' Application.
Configuration Error
Parser Error Message: Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive
This is caused when the Application Pool is trying to run a .NET 4.0 application on the .NET 2.0 CLR.
Error Appears As Follows
or
HTTP ERROR 500.19 - Internal Server Error
The configuration section 'system.web.extensions' cannot be read because it is missing a section declaration.
Steps for resolution
Step 1 - Open the Control Panel
Step 2 - Open the Administrative Tools
Step 3 - Launch the Internet Information Services (IIS) Manager
The following is for IIS7, for IIS6 (win 2003) skip to next section
Step 4 - Click on the Application Pools node
Step 5 - Find the DefaultAppPool
Step 6 - Double click on this and set the .NET Framework to v4.0.xxxxx
If .NET Framework 4.0.xxxx is not available in the drop down, the .NET 4.0 framework will need to be installed. See installation instructions for location of this server install package.
Step 7 - Click OK and refresh your browser to see the page render properly
Step 4 FOR IIS 6
Step 4 - roll out the Web Sites tree until the system you are managing becomes visible. Right click and choose properties, then click on the ASP.Net tab. Select 4.0.xxxx and click OK. The IIS application will be restarted for you.
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