This is my second posting of a question. See below. Also I don't know where to find the answer. Please send link or answer to hollandhouse@woh.rr.com. Thanks JHolland I have a problem with Firefox 107.0.1 that needs your expertise. I’ve used Firefox since version 12 with no problems. My Macbook Pro (on Catalina 10.15.7) is running Spectrum’s (Charter) Security suite and requires installing a spectrum extension in each browser. The extension installs on Safari (my backup browser), but won’t install in Firefox. Spectrum app takes Firefox to the web site to download extension, but nothing happens. Site can’t install the extension. The link is below. What’s the fix? Thanks John Holland hollandhouse@woh.rr.com https://download.sp.f-secure.com/firefox-extension-install/prod/browsing-protection.firefoxextension.xpi The Macbook Pro is 15” Retina made 2015 2.8 ghz quadcore Intel I-7 16gb 1600 mhz DDR3