Hi,
If GPO settings are not removed completely or settings were not saved correctly, this issue may occur.
Let’s try to check if Registry settings was changed when changing IE proxy settings.
1. Open IE and change proxy settings. Click OK to apply.
2. Open "regedit", navigate to
HKCU\software\Microsoft\Windows\CurrentVersion\Int ernet Settings
In the right panel, are Proxy settings correct?
3. Log off and test. If the issue persists, please help to collect gpresult log.
Run "gpresult /v >>c:\gpresult.log", send gpresult.log to
tfwst@microsoft.com.
4. On DC, open GPO, navigate to Computer Configuration\Administrative Templates\System\Group Policy,
Double-click Internet Explorer Maintenance policy processing, Make sure it’s Note Configured or Disabled.
Navigate to IE Maintenance, right-click Internet Explorer Maintenance, choose Reset Browser settings. Delete all file in the following folder.
\\FQDN\Sysvol\FQDN\Policies\<GPOGUID>\User\Microso ft\IEAK
Note: Replace FQDN and <GPOGUID> accordingly.
5. On client, delete files in the following folder.
%windir%\System32\GroupPolicy\User\Microsoft\IEAK
Documents and Settings\<<username>>\Application Data\Microsoft\Internet Explorer\Custom Settings\Custom0\
Documents and Settings\<<username>>\Application Data\Microsoft\Network\Connections\pbk\Rasphone.pb k (for connection settings)
Thanks.