Windows Server 2008 R2 does not have GPO settings to force Windows 7 or any other Windows machines with Internet Explorer 9+ to go through the proxy with the usual Internet Explorer Maintenance option that forces proxy settings. Below are helpful articles on how to get this working with the new Group Policy Preferences within Server 2008 R2 registry settings:
How To Configure Proxy Network Client In Windows 7 Jul 19, 2017 Locking down IE proxy settings under PC Settings\Network Sep 06, 2016 [SOLVED] Define IE Proxy Settings Machine Wide - Windows Mar 30, 2015 How to remove proxy settings in Windows 7, 8 & keep it
How to set up a proxy server in your browser - IONOS
The WinHTTP configuration setting is independent of the Windows Internet (WinINet) Internet browsing proxy settings and can only discover a proxy server by using the following discovery methods: Auto-discovery methods: Transparent proxy. Web Proxy Auto-discovery Protocol (WPAD) Jan 10, 2015 · Windows 7: "Proxy server" checks itself automatically. When entering Internet properties -> connection -> LAN settings, the box named "Use a proxy server for your LAN" keeps checking itself! I have to constantly un-check this box while surfing to make sure that all sites load.
Dec 13, 2019 · Windows Settings – Proxy. Method 2: Using command prompt. 1 Use Win + R key combination open “Run” window. Enter following command and hit Enter key to disable proxy; reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyEnable /t REG_DWORD /d 0 /f taskkill /f /im SystemSettings.exe && start ms-settings:network-proxy taskkill /f /im
Aug 09, 2016