Please explain the problem in detail. What happens? What is/are the exact error message(s) ?

Make sure you are not blocking content.

https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop also see https://blog.mozilla.org/security/2021/03/23/introducing-smartblock/

https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection

Diagnose Firefox issues using Troubleshoot(Safe) Mode {web link}

A small dialog should appear. Click Start In Troubleshoot(Safe) Mode (not Refresh). Is the problem still there?

Many site issues can be caused by corrupt cookies or cache.

Warning ! ! This will log you out of sites you're logged in to. You may also lose any settings for that website.

• Delete cookies to remove the information websites have stored on your computer {web link}

• How to clear the Firefox cache {web link}

Dear FredMcD,

Thank you for offering your help!

I enter the URL in the address bar, eg meetup.com, guardian.co.uk, guardian.com. Those are specific websites where problem has been encountered A blank screen appears; The dots to the left of the tab move back-and-forth for what seems an interminable length of time; Then the Connection Has Timed Out message appears.

I have gone to all the links you kindly provided and executed their instructions. The problem persists.

Grateful any further advice!

Regards

Start Firefox using Troubleshoot(Safe) Mode {web link}

A small dialog should appear. Click Start In Troubleshoot(Safe) Mode (not Refresh). Is the problem still there?

Start your Computer in safe mode with network support. Then start Firefox. Try Secure websites. Is the problem still there?

Starting Any Computer In Safe Mode (web link) Free Online Encyclopedia

https://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/

https://www.digitalcitizen.life/4-ways-boot-safe-mode-windows-10/ +++++++++++++++++++++++++++++++++++++++++++++++ If the problem goes away with the computer in Safe Mode, the problem is with one of the other programs on the system.

As a test, disable your protection programs.

You can check the Web Console (Tools -> Web Developer) for messages about blocked content and about the presence of mixed or unsafe content.

• https://developer.mozilla.org/en-US/docs/Tools/Web_Console

You can check the Network Monitor to see if content is blocked or otherwise fails to load.

• https://developer.mozilla.org/en-US/docs/Tools/Network_Monitor

If necessary use "Ctrl+F5" or "Ctrl+Shift+R" (Mac: Command+Shift+R) to reload the page and bypass the cache to generate a fresh log.

Start Firefox using Troubleshoot(Safe) Mode {web link} A small dialog should appear. Click Start In Troubleshoot(Safe) Mode (not Refresh). Is the problem still there? No change

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Start your Computer in safe mode with network support. Then start Firefox. Try Secure websites. Is the problem still there?

Have repeatedly tried selecting Options from safe mode menu and subsequently Hard Drive. As a non-digital native, I'm unable to see how to start Firefox

You can check the Web Console (Tools -> Web Developer) for messages about blocked content and about the presence of mixed or unsafe content.

• https://developer.mozilla.org/en-US/docs/Tools/Web_Console

Thank you for this. It's all above my pay grade though. There are lots of messages about blocked content etc. I don't know what to do with this, You can check the Network Monitor to see if content is blocked or otherwise fails to load.

• https://developer.mozilla.org/en-US/docs/Tools/Network_Monitor

If necessary use "Ctrl+F5" or "Ctrl+Shift+R" (Mac: Command+Shift+R) to reload the page and bypass the cache to generate a fresh log.

See above

I have also re-installed the Monterey OS. Problem persists and I'm very frustrated with my inability to resolve. BTW, it's also a problem on my Android Samsung, and not just with Firefox but also with some apps like MeetUp, for example. Is that a clue to what the problem is, that it's both on my Macbook and on my phone???

If the problem occurs on multiple devices, it may be an issue with your router blocking the websites. 1. Disable third-party software like McAfee on your router 2. Check your router settings (most notably one like Firewall and Parental Controls) to see if the listed websites are blocked

If you need help accessing the router webpage, check out https://www.wikihow.com/Access-a-Router

If the problem occurs on multiple devices, it may be an issue with your router blocking the websites. 1. Disable third-party software like McAfee on your router 2. Check your router settings (most notably one like Firewall and Parental Controls) to see if the listed websites are blocked

If you need help accessing the router webpage, check out https://www.wikihow.com/Access-a-Router

If the problem occurs on multiple devices, it may be an issue with your router blocking the websites. 1. Disable third-party software like McAfee on your router 2. Check your router settings (most notably one like Firewall and Parental Controls) to see if the listed websites are blocked

If you need help accessing the router, the address is usually at http://192.168.1.1

If the problem occurs on multiple devices, it may be an issue with your router blocking the websites. 1. Disable third-party software like McAfee on your router 2. Check your router settings (most notably one like Firewall and Parental Controls) to see if the listed websites are blocked

If you need help accessing the router webpage, it is usually at http://192.168.1.1

Apologies for the duplicate posts. I mistakenly believed the posts did not get through and did not realize it simply needed mod approval.

Issue seems to be rectified this morning on both MacBook & Android. Mind you, I'm using a VPN setting so I can't say whether that's why it's working.

Give it a few days. If the problem is gone;

Please flag your last post as Solved Problem as this can help others with similar problems. Go to that post and click the 'Solved' button to its right.