Forum communautaire Firefox

It won't let me connect to websites due to "Did Not Connect: Potential Security Issue" However, I am certain that it's a mistake, because the websites that I'm unable to connect to are https://web.whatsapp.com/ https://www.instagram.com/ and other trusted websites. For youtube it shows that I'm offline, although I'm connected to the internet. This problem may be due to recent issues related to my internet provider and/or router, because I also have issues with discord app as well as some game clients(Jagex, Blizzard, for example).

When trying to access many popular websites with Firefox on my Fedora 43 installation, I am greeted with a security warning page with the SEC_ERROR_UNKNOWN_ISSUER error. For most of these websites I can simply accept and continue, but HSTS-only sites will not permit this.

Affected websites include but are not limited to (based on exceptions in the certificates section of Firefox settings):

• github.io (many subdomains)
• purdue.edu (many subdomains)
• iu.edu
• ebay.com
• cbsnews.com
• iwm.org.uk
• home.cern
• celestrak.org

Any help in resolving this is appreciated.