Форум сообщества Firefox

With the most recent updates of Firefox with secure server substitution, I often open the Firefox browser for windows and cannot even reach an initial page because reaching the secure DNS substitute servers (Cloudfare) is failing. The NextDNS server also does not work. I love this security but it appears something is wrong. I have long been using Cloudfare as my listed DNS sever on my router for the entire home LAN, but now it is not connecting by that or by Firefox (and Waterfox) - and this includes using Google and a few other major DNS alternatives , but the Chrome browser, I keep as a backup, works. Moreover, I have had to swap my default DNS on my router and in windows to be my local Spectrum (Charter) DNS servers 71.10.216.1 & 71.10.216.2. They always work when I turn off all Firefox securre browsing settings for DNS and HTTPS. I WANT THOSE PROTECTIONS FROM FIREFOX, BUT I DO NOT KNOW HOW TO MAKE THIS WORK OTHER THAN TURNING ALL SECURITY OFF!!

Ever since upgrading to Windows 11, my Firefox installation has occasionally been unable to resolve domain names of some websites. Example domains:

• apps.powerapps.com
• static.cdninstagram.com
• google.com

As I was trying to debug this, I discovered that the DNS resolution and connection timings are just over 30 seconds (see the attached image). This is highly unusual.

• The issue does not occur with other web browsers on my computer (i.e., Microsoft Edge).
• The issue has persisted across reboots.
• I have already reinstalled Firefox (and wiped the temp files and appdata profile before installing again).
• The issue does not occur with other devices on my home network.
• DNS over HTTPS has been manually disabled.
• Changing DNS resolvers in my Windows settings does not fix the issue.
• The issue is still present with a fresh, unmodified installation of Firefox.

Any help would be greatly appreciated! I love Firefox and do not want to switch to a different browser.

So, this has been going on for a while in multiple devices.

If for some reason the network that I'm connected to loses connection to the internet and I connect to another network that has internet access Firefox fails to recognize that there is internet access from another network. The only way to get Firefox back online is to close it and open it again, losing any work that was being carried out.

This happens with multiple devices on different networks

¿how do you get Firefox to understand that there is internet access from another network? (like when switching from wifi to a cabled connection)

I'm experience trouble with firefox loading pages. It seems that some pages (about 1 in 10) will not load first try. Instead it results in either a "unable to connect", "Hmmm... Can't reach this page" or simply a blank page. I have not noticed any pattern in the pages on which this occurs and they all display correctly after a refresh. This problem only occurs on firefox. I have already tried disabling the proxy without any success. I'm looking for any suggestions for solving/diagnosing this issue.

System info: Firefox 142.0.1 Fedora 42 Linux kernel 6.16.3-200.fc42.x86_64

Could someone clarify where Firefox stores the list of domains that bypass the proxy (the ‘No Proxy for’ list)?

After refreshing the browser this information is gone from settings.

Thank you!

Hmm. We’re having trouble finding that site.

We can’t connect to the server at data.digital.costco.com.

Hmm. We’re having trouble finding that site.

We can’t connect to the server at data.digital.costco.com.

Hmm. We’re having trouble finding that site.

We can’t connect to the server at data.digital.costco.com.

Trying to log in to Starlink and get a message "Fastly error: Misdirected Request (E2815). If you are the owner of the domain, please ensure the DNS settings are correct. Details: cache-pdk-kpdk1780113-PDK"

Unable to connect

Firefox can’t establish a connection to the server at mesp.finance.gov.bd.

   The site could be temporarily unavailable or too busy. Try again in a few moments.
   If you are unable to load any pages, check your computer’s network connection.
   If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the web.

Until yesterday I was able to get into the Internet from my windows 11Pro pc. Suddenly I am unable to sign into the Internet using Firefox. It is saying the server name is not valid and the password is incorrect.

Current Behavior When Firefox is set to offline mode (File → Work Offline), the Developer Tools Network tab does not display request body of requests that web applications attempt to make. This creates a significant gap in debugging capabilities, as developers cannot inspect request payloads details that would normally be visible.

Requested Enhancement Enable the Network tab to capture and display attempted network requests payload even when offline mode is enabled