Forum der Gemeinschaft Firefox

After the latest update, a website I use (https://compcon.app/) started throwing the following errors:

downloadable font: CFF : Failed validating CharStrings INDEX (font-family: "Helvetica Bold" style:normal weight:700 stretch:100 src index:0) source: https://compcon.app/assets/Helvetica-Bold-DaBjwqT2.otf downloadable font: CFF : Failed to parse table (font-family: "Helvetica Bold" style:normal weight:700 stretch:100 src index:0) source: https://compcon.app/assets/Helvetica-Bold-DaBjwqT2.otf downloadable font: rejected by sanitizer (font-family: "Helvetica Bold" style:normal weight:700 stretch:100 src index:0) source: https://compcon.app/assets/Helvetica-Bold-DaBjwqT2.otf

It can't load the font the website is asking it to use and is replacing it with a default one instead.

Do you know how to fix this? Either on my end or theirs?

Since the update I performed today, 4/27/26, I am unable to upload files to my NAS via the Firefox web browser on a Windows 11 PC. I can still do it via the Google Chrome browser so I am not completely crippled, but it would be nice if I could still use Firefox for this work. Any suggestions on how to fix this, or will it require the software itself to be fixed?

Hi everyone,

I’m facing a strange issue with Firefox and need some help.

When I try to use Firefox normally, it sometimes opens but doesn’t load pages properly or gets stuck on a blank screen. I’ve already checked my internet connection and it’s working fine in other browsers.

I also tried restarting Flixfox and clearing cache, but the issue still comes back randomly.

Has anyone experienced something similar or knows what could be causing this? Any guidance would be really appreciated.

After the recent Firefox update to 151.0 I can no longer log into Facebook. The reCAPTCHA is now broken. I did a system restore to version 150.0.3 and it works fine. Something is broken and I don't want to restore all my computers and devices. Thank You.

Recently my system updated Firefox to version 149.0.2. It works great! However, it will not display my homepage which is yahoo.com. I can go to any other website and everything is normal. But when I click on the little house for "Homepage" it briefly displays and then goes blank.

This does not happen when I use a different browser.

Please advise.

EOM, basically. I click on my home page icon (which is www.yahoo.com). Firefox executes that properly, but totally on its own, goes blank within 30 seconds. Does not happen when using Google Chrome. This started happening about 5-7 days ago.

VPN has appeared at the top of the screen with an option to click the GET STARTED button to try the built in option. I haven't done so but now can't access a website I regularly use. Their tech team tell me that the VPN is blocking access. How do I disable this when I haven't asked for it so don't know where to find it

The latest version of Firefox 150.0.1 (64 bit) does not work correctly for Twitch.tv and Canadiantire.ca. I can't login to either. Is anyone else having similar problems?