Suppose your computer clock is set to the wrong time and date, which means that the date and time on your device are not correctly configured. Some methods are given below to fix it fast.
● Press the Windows Start button or the Windows key
● In the start menu, choose the Settings option
● Choose time and language on the Settings page
● In the date and time zone, you can correct the current date and time on your system
● If you are completed, then close the Settings window.
After reading out the above process, if time-related errors are not sorted out in Mozilla Firefox, then you must dial the Mozilla Firefox helpline number to fix it.
Read more: - Fix Time - Related Errors on Secure Websites in Mozilla Firefox | Steps to Mozilla Firefox Update Download in Windows

Is the error of Firefox Proxy Server giving you hard times? If yes, then it can occur because of many reasons; however, you can resolve this error by following the steps mentioned below:
• You need to force Firefox for using the Auto Detect Proxy Settings
• Add the URL SSL port in the allowed list
• You have to switch to HTTPS proxy
• You must disable the built-in proxy server in Windows 7, 8.1, 10
• Uninstall the VPN Client
If these steps don't help you fix the proxy server error, then it's best to reach out to certified experts by calling Mozilla Firefox Support Number that is available 24*7 around the clock.
Read more: - How to Fix the Firefox Proxy Server Error | How to Fix Secure Connection Error in Mozilla Firefox