How to delete an expired security certificate?
Each time I open a fresh Firefox page, I get a message popping up 4 times informing me that a security certificate for a cashback set-up that no longer exists, has expired. How do I get rid of it?
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Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
- Do NOT click the Reset button on the Safe Mode start window.
Thank you for taking the time to reply. Alas, I have tried restarting Firefox but can find no "Safe Mode" in the menu at the top of the screen. My Firefox is old, having come out of Noah's Ark all of 4 years ago, an eternity for the weirdos that design these things. (Version 13 something). So the problem is still there. Not that it means much, as all I have to do is click on each of the four or five irritating messages that pop up each time I start the bloody thing. And anyway, as Firefox has decided to stop "supporting" my version, I'll soon have to find a navigator that I can still use. Or buy a new Macintosh, which I'm certainly not prepared to do; planned obsolescence has its limits.
You can use one of these to start Firefox in Safe Mode:
- On Windows, hold down the Shift key while starting Firefox with a double-click on the Firefox desktop shortcut
- On Mac, hold down the Options key while starting Firefox
- Help > Restart with Add-ons Disabled