The proxy settings have been disabled by enterprise policy, you can see active policies by visiting about:policies in the address bar. It could be antivirus, security software, VPN or other proxy software that is responsible.

Is it possible to enable them? How can I unlock settings.

I need to unlock the proxy settings of firefox because of testing purpose.

Enter about:policies in the address bar and check your active policies. The corporate administrator will be able to unlock it.

See also:

• https://mozilla.github.io/policy-templates/

Is it possible to unlock settings from my end.

If you are the admin of the system, you can uninstall or configure software that is applying the policy.

See:

• https://support.mozilla.org/en-US/kb/customizing-firefox-using-group-policy
• https://support.mozilla.org/en-US/kb/customizing-firefox-using-policiesjson

You can inspect the Mozilla and Firefox keys with the Windows Registry Editor in HKEY_LOCAL_MACHINE and in HKEY_CURRENT_USER with the Windows Registry Editor to see whether GPO policy rules are active.

• HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox\
• HKEY_CURRENT_USER\SOFTWARE\Policies\Mozilla\Firefox\

The mere presence of the "Mozilla\Firefox\" key is sufficient to make Firefox display this notification, so if you have the Firefox key then remove it and only leave the Mozilla key or remove this key as well if it is empty.

• HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox\ =>
  HKEY_LOCAL_MACHINE\SOFTWARE\Policies\

Can I connect to live agent or something? Not able to resolve this issue. Provide support from live agent so they can resolve issue asap. Thank you.

Did you check about:policies like suggested above?

You can open "about:" pages via the location/address bar. The "about:" protocol is used to access special pages. You can find available about pages listed on the about:about page.

I have uploaded an image of active policies I have.