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Error on IIS 7 or IIS 7.5 running .Net 1.1: \\?\C:\Windows\system32\inetsrv\config\applicationHost.config

21.10.2014

If you try to change any property of an application that was build with dot net 1.1 on IIS 7 or IIS 7.5 get an error \\?\C:\Windows\system32\inetsrv\config\applicationHost.config. To fix this issue follow the instruction in this article. 


This is an error you will get.

There was an error while performing this operation.

Details:

 Filename:
\\?\C:\Windows\system32\inetsrv\config\applicationHost.config
Error:

To fix this issue try this.

  1. Create the Framework64 directory for 1.1
    md \windows\microsoft.net\framework64\v1.1.4322\config\
  2. Copy the 32bit config to 64bit config location created in step 1.
    copy \windows\microsoft.net\framework\v1.1.4322\config\machine.config \windows\microsoft.net\framework64\v1.1.4322\config\