I am planning to disable Proxy Server settings in the connection settings in the Firefox options. I downloaded "firefoxdefaults & firefoxlock". Made these changes in the GPO (mentioned below) Computer Settings 1. Delete Private Data cookies 2. Phishing Protection - Enabled. 3. Proxy Settings - Disabled 4. HomePage - Enabled. 5. Extension and Theme Installation - Preference State (Locked) & Allow Addin Installation _ Disallowed. User Settings 6. Proxy Settings - Disabled. GPO didnt apply properly. Can you please let me know if there is any other options there to disable proxy settings. Hoping to see your message.