hello, can you try to replicate this behaviour when you launch firefox in safe mode once? if not, maybe an addon is interfering here...

Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

Ah that fixed the problem, thanks. Turned out it was an extension.

I've been having this issue for some time now. Have seen same complaint all over the web. I have tried all suggestions and I'm still getting error messages with 'most' google services links (which are most that come up after searches)

"Unable to connect Firefox can't establish a connection to the server at www.googleadservices.com."

started safe mode ... disabled all extensions/plugs ... even did a reset (yikes)

sometimes the long character encrypted link has an html at the end ... if i manually delete all the encrypted text, sometimes i can get to the link :/

i wonder if reverting to a much older version of FF will fix this.