Hello,
Have you also tried to turn off this setting in User configuration to check
User Configuration > Administrative Templates > Windows Components > Internet Explorer
Double-click on the Prevent changing proxy settings policy in the right pane. Select "Enable" option.
You can also set the setting prevent proxy settings in the computer configuration/user configuration-Windows settings-Administrative templates-Windows components-Internet Explorer-prevent changing proxy settings on the Win 11 domain client, open local group policy editor (open gpedit.msc and click Enter) navigate to Windows settings-Administrative templates-Windows components-Internet Explorer-prevent changing proxy settings to check if the group policy works fine.
Best Regards,
Hania Lian
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