What kinda links are those? That sounds more like a security software is doing the blocking.

Thanks for your response. It is literally every link in gmail, even the button to get to this page where I am replying to your answer is blocked and requires me to click an 'Allow' button. No big deal once or twice, yeah, but I field a lot of email, and a lot of it directs me to sites I frequent - 'you got a response to your question in this forum' - or 'click here to see the lower price we found for you on an item you're watching', or 'your January Statement is ready for viewing', etc, etc, etc. These are info, finance, and commerce sites which are well known to me, not malware pits, and the message along the top of the window clearly states that Firefox has blocked the page, click allow to continue., so it's not security software doing the blocking. There must be some little box to tick that turns off FFs nanny function so I don't have to click the Allow button a thousand times a day. Click on that little image just below to enlarge the Firefox message I'm getting.

Sounds like your browser setting changes are causing the issue. How are you privacy settings like? In 65 three are 3 boxes to choose for how it works on the internet if you choose the second two that could be also be part of the problem.