Configure system-wide web proxy for .NET web applications (4375359)

1. Stop the application service
2. Open Notepad as Administrator
3. Open C:\Windows\Microsoft.NET\framework\v4.0.30319\config\machine.config and search for <system.net>

If it does exist, edit this section as appropriate. If it does not exist, add the following text as the second line from the end (</configuration>) and substitute the proxy address as appropriate for the environment:

<system.net>

   <defaultProxy>

      <proxy autoDetect="false" bypassonlocal="true" proxyaddress="http://proxy:8080"" />

   </defaultProxy>

</system.net>

4. Save the file
5. Apply the above changes on the following three files

• C:\Windows\Microsoft.NET\framework\v4.0.30319\config\web.config
• C:\Windows\Microsoft.NET\framework64\v4.0.30319\config\machine.config
• C:\Windows\Microsoft.NET\framework64\v4.0.30319\config\web.config

6. Open an elevated command prompt and run the following command, replacing the proxy address:

netsh.exe winhttp set proxy http://proxy:8080 bypass-list="*.example.com"

7. Verify the proxy setting

netsh.exe winhttp show proxy

Example for bypassing 10.*.*.* , *.domain.int and *.example.com

<system.net>

   <defaultProxy>

      <proxy autoDetect="false" bypassonlocal="true" proxyaddress="http://proxy:8080"" />

      <bypasslist>

         <add address="10\.\d{1,3}\.\d{1,3}\.\d{1,3}" />

         <add address="[0-9a-zA-Z]+\.example\.com$" />

         <add address="[0-9a-zA-Z]+\.domain\.int$" />

      </bypasslist>

   </defaultProxy>

</system.net>

8. Reboot server

Detailed documentation for configuring .NET Framework proxy can be found on the following Microsoft links:   

One Identity does not provide support for .NET Framework or for problems that arise from improper modification of the configuration files. The .NET Framework configuration files contain critical configuration data. Make sure to back up the files before modifying them.