Webclient Cannot open .net editor with .NET Framework - 'There was an error trying to create the .NET control for this page'

Issue

A dialog of  " Cannot open .net editor with .NET Framework" comes up with new installation of webclient or after a Microsoft update of .net 4.5.x 

Product Line

Andover Continuum

Environment

Windows 7

Windows Server 2008

Internet Explorer 

Cause

Microsoft changed the behavior of Internet Explorer when .net 4.5.x is installed on a PC. It turns off .net 2.0 support which is needed for sefveral editors to function on webclient browser PCs

Resolution

Click for a snapshot of the error

 

See the following link below to a hotfix posted on the download center (This is a registry key file that installs the registry keys mentioned further down in this article. It allows Internet Explorer to utilize .net 2.0 that several webclient editors use)

web.Client v2.0 .Net Editor Hotfix

 

This hotfix contains a .reg file which changes the registry, it is recommended to make a Windows Restore point

http://windows.microsoft.com/en-us/windows7/create-a-restore-point

or a backup(export) of the existing regisry folder(hive)

https://technet.microsoft.com/en-us/library/cc755091.aspx

The hotfix only updates the following keys

a.     On an x86 Operating System

        Add a DWORD attribute with the name EnableIEHosting to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework

       Set the value to 1

b.     On an x64 Operating System

       Add a DWORD attribute with the name EnableIEHosting to HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\.NETFramework

      Set the value to 1

A reboot of the webclient browser PC is required after the change is made.

Each browser PC will need to have this fix applied

 

For more information see the Microsoft link

http://msdn.microsoft.com/en-us/library/hh367887(v=vs.110).aspx#asp