Porxy PAC file GPO- Registry Item-GPP Method

Deploying Proxy PAC file configuration through GPO-GPP – Registry update method: 

I had received request from our team to setup the proxy PAC file configuration for VDI clients, hence I started preparing the GPO with User configuration settings.

They had mentioned that PAC file configuration which we set in the IE -Connections - Lan Settings should be editable by users, hence I decided not to use the GPP- Internet Settings to deploy the IE configuration based on the IE version target. 

Solution:

Created the New GPO for testing the new Registry Item for Proxy PAC configuration.

Updated the “AutoconfigURL” settings with PAC file Path on below registry path in User configuration.

HKCU\Software\Microsoft\windows\CurrentVersion\Internet Settings

I decided to check and it was working fine for my login and for the requestor as well...

After two or three days, few customers complaint that the proxy configuration is not displayed for them.

So, I logged into to those servers / clients where customer reported the issue … this is the first time I logged on to those servers. Surprisingly, GPO which I had setup does not apply in IE proxy configuration script option but GPRESULT report shows that registry item is processed.

I started to blame the IE Enhanced Security Settings but I checked it was in disabled Mode for both Administrators and Users.

In the problematic system, I manually tick the “Use Automatic Configuration Script” and Un-ticked it. Forced the Gpupdate using force switch. 

Magic, this time it was applied successfully. I found in Internet that we others also had similar problem, they had solution by Setting the following registry Key.  

So, I have included this registry item also in the same GPO in Order 1.

Seems, to be working fine till now. Hope, this will be helpful for you as well...