I-Firefox Community Forum

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

"I'm experiencing an issue where Firefox shows a 'Trouble finding site' error every time I visit a new website. However, when I refresh the page, the site loads correctly. This issue persists across multiple websites and requires a refresh every time I navigate to a new page. Has anyone else encountered this problem? I'd appreciate any help in resolving this issue."

below example shows: visited site -> error -> refreshed -> now works

Hi,

I have noticed that quite often web sites are not opening the first time and FF reports broken connection. Refreshing or trying the second time helps - sites open very quickly.

What may be the problem?

I am using the most recent version on Windows 11 24H2. This behavior appeared about a week ago. I have reinstalled FF but it didn't improve anything.

Thanks!

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!

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!!

Hi. I've been having trouble with Firefox.

When I enter a certain website (https://app.helpwise.io/) using my PC, after a few minutes my internet connection gets disabled. When I try to run 'Diagnose Network Problems' in Win11, no issues.

First time this happened, a restart fixed the problem. Second time, a DNS flush fixed it. But after that, those solutions don't work anymore.

I initially thought it was that website (which I use for work) but I tried running that website on my Android phone using Firefox as well and I did not have any connectivity issues.

So, I tried running the website in Chrome - no issues. I did work side by side with Firefox opened as all my bookmarks for work are there, and eventually after a few hours my internet was disconnected again - even though https://app.helpwise.io/ was not opened in Firefox.

I have tried refreshing Firefox, then disabling all extensions and running https://app.helpwise.io/ and still it immediately disabled my internet.

There are some times that it even turned OFF my Avast anti-virus.

I have tried running Avast and Malwarebytes and no virus or malware was detected.

I still want to use Firefox and I'm now thinking of formatting my computer. But when I run Firefox again after formatting, I may have the same issue.

Can anyone help?

Long story here:

A few weeks ago, I lost internet connectivity on my desktop PC at work running Windows 11. I checked Firefox, Edge & Chrome but couldn't access any site. It took a few hours and a lot of updating Windows, rebooting each time the internet kicked out, but I got it to work again.

Fast forward to this past Monday the 29th when the issue happened again. Within roughly a minute, the internet just died on my desktop again. I grabbed my work laptop, also running Windows 11: same issue happened within 60 seconds. I checked Firefox on a desktop running Windows 10 - had no issues at all.

Today, I installed Firefox on another laptop (the same model at the other one) running Windows 11. As soon as it synced my account, the internet stopped working. I though it may be the Sync option, so I reinstalled Firefox on my laptop but did not log in to Sync - the same issue: dead internet within 30 seconds now.

I have:

• Run anti-virus
• Run network diagnostics and reset
• Rebooted a multitude of times
• Uninstalled, reinstalled at least twice
• Run troubleshooting in Firefox (which I cannot attach the logs due to it being uninstalled right now)
• Checked to make sure my modem/routers are working right (no one else in the building has this issue and we all use Firefox, but none are synced to my account)
• I even asked my company's tech team (who are mostly software developers) and they said No, sorry, we don't help with that (wonderful right?)

I've attached a screenshot of the OG machine's information. Not sure if it will help at all, but it's worth a shot.

Hi Mozilla Team,

I'm currently using Firefox version 142.0 (64-bit) and I'm having trouble setting up a proxy. I've tried configuring it through the usual settings under Settings > General > Network Settings > Settings..., but unable to configure the Proxy in Firefox 142.0 (64-bit), but no luck.

Is there a known issue with proxy configuration in this version? Are there any new settings or changes I should be aware of that might affect proxy setup?

Thanks in advance for your help!

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.

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"

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)