Firefox Support Forum

Network Protocol Error

An error occurred during a connection to www.facebook.com.

The page you are trying to view cannot be shown because an error in the network protocol was detected.

   Please contact the website owners to inform them of this problem. I get this often

Since the task limit option seems to have been obliterated? I believe the many more "programs" and the events they create for windows to handle is causing all sorts of virtual memory problems. Changing win10 advanced system settings from performance for programs to background services seems to have restored Firefox performance in my case, see: 10 advanced system settings win10 advanced system settings performance programs vs background services Is there an about:config option that would allow one to achieve the same "programs" limiting option as before? This laptop has 16 gig of memory and I used to successfully have even better Firefox performance with windows virtual memory turned off, but eventually I would get crashes. I can understand why Firefox was modified in a way to better localize the source of crashes, but in my case it has degraded performance. Thanks Mozilla for a great product I have valued for years!!!!

There are many mainstream websites that have stopped functioning in firefox that work perfectly fine when switching over to brave and enabling scripts

these are not obscure sites, they are sites for privacy protecting entities hence the lack of function on firefox is perplexing

how do we make these sites work in firefox again to save the switching to brave?

I wrote this on 13 June 2022: ...I am signed into a Firefox account. I have used this account on at least three different computers. I have downloaded the application anew at least a dozen times.

Firefox randomly, from where I sit, opens things in French rather than English. How can I keep it in English unless otherwise specified (I occasionally want German or Japanese)?

Thank you...

None of the suggestions worked. I reported that, but the thread was archived rather than answered.

How can I get all the info out of my account and try to start another that speaks English reliably?

Thank you.

In the last few days, I have noticed that a number of websites are throwing me SSL_ERROR_NO_CYPHER_OVERLAP errors. Most websites, particularly more modern websites, seem to not have this issue. As some more professional examples, www.twitch.tv and www.dndbeyond.com throw this error. I have tried setting temporarily TLS version fallback limit and min to 0, with no change. I'm not really sure how to go about debugging what cyphers these websites do support and why they are throwing these errors. Any help on where to start would be greatly apprecaited.

I'm amazed, just AMAZED I can't find the answer to this with a simple google search, or searching the questions here, and I re-worded my search several times. All the answers I could find, even chatGPT (I know it's not alway sup to date) told me to use this option even though I specifically told it it wasn't there, is anyone aware that sometimes the option isn't there? What gives? Not blaming anyone specifically, but this a really simple question, I'm I the first person it's ever happened to?

I'm trying to fix a sound problem where videos will not play, and this is a suggested step. The sound on youtube videos plays with Google Chrome, so it's not my sound drivers, just with firefox it doesn't play. One of the steps as well was the clear my info, I cleared everything except history, I wished there was a way to back those up, I'll look it up.

Starting firefox in safe mode doesn't fix the problem either.

I recently got help (thank you, Cor-El!!) and was able to put Firefox into compact mode. It's still not enough. Is there anyway to make even compact mode smaller? After websites add their own headers and all, it now leaves me about 2 inches of working space; it's better than one inch but isn't enough to see things.

I've been trying to keep going back to version 99 (darker attached screenshot in blues) but it isn't being allowed. The other screenshot (lighter, in oranges and pinks) is the current version in compact mode. It's a bit better, but still is not good.

Is there any way I can change the height of the headers myself? Or can I ask someone else to do it? I'd like it about half to 2/3 the size it is now, even in compact mode. Can I do that? If so, how?

Or, can I switch things around so the headers are at the side of the screen? This is a standard 15" diagonal screen laptop currently running Windows 10.

When I log in, refresh, or just open up the website, I'm met with an error message attached below. I use a HP Pavillion Laptop, Windows 11, and am on version 113.0.2 (64-bit). I've tried the following: - Make sure spotify is up to date - Restart my router - Make sure 'Widewine Content Decryption Module provided by Google Inc.' is enabled. - Allow Firefox to play DRM controlled content - Disabled my plugins - Tested this on other browsers (they work) - Made sure I'm not using a VPN. Oddly enough, Spotify's web player seems to function alright in Private mode and the app is fine too. I will try any all solutions presented, please.

I have been using Firefox 52.9.0, and I know it is outdated but it still synced until a few days ago at least. Then the other day I updated my password to strengthen security. After that, I am unable to sync anymore. Is there a way to fix it? I need to continue to use Firefox 52.9.0. Please note that I do not need to be told about security issues as I am aware of them well enough.

I get the following message when I try to make Firefox to sync:

> Blocked by Content Security Policy

> This page has a content security policy that prevents it from being loaded in this way.

> Firefox prevented this page from loading in this way because the page has a content security policy > that disallows it.

Thank you.

Hello,

My bank's website has a 2 page verification process for logging on. The first page is for the User ID and the second page is for the password.

Until just a few days ago, I could enter the first letter of my User ID into my bank's website login field, and FF would auto-fill the rest. Now when I enter that first letter, nothing happens. I then have to look up this info before I can continue. Luckily, the second page (for the password) is working just fine.

If I remember correctly, there has been a recent FF update. This new update may be the source of this issue.

Please help!

Thanks, Andre'a

When I switch from one tab to another doesn't matter the webpage the page adjusts the content on the tab. For example I was on youtube and switched over to gmail and it adjusted the screen and when I switched back to youtube it did the same on youtube. I wasn't zoomed in or anything. I was just on the tab and it was fine and looked how it should but as soon as I switch to another tab it does it on that tab and then will do it again when I switch back to the tab I was on originally on. I'm on FF vers 113.0.2 (64-bit).

Good afternoon,

I've got a problem with add-ons while using Squid MITM Proxy with a custom certificate for Firefox/LibreWolf.

While I'm trying to update / install an extension / theme, it fails with:

``` 1686147276233 addons.xpi WARN Download of https://addons.mozilla.org/firefox/downloads/file/4104397/witchdoctor-2.0.xpi failed: [Exception... "Certificate issuer is not built-in." nsresult: "0x80004004 (NS_ERROR_ABORT)" location: "JS frame :: resource://gre/modules/CertUtils.sys.mjs :: checkCert :: line 177" data: no] Stack trace: checkCert()@resource://gre/modules/CertUtils.sys.mjs:177 onStopRequest()@resource://gre/modules/addons/XPIInstall.jsm:2514 ```

How can I install an add-on while using the MITM proxy?

Hello - Firefox to Safari bookmark syncing used to work seemlessly between pc and ipad. Noticed it's no longer working. I've done all the resetting/restarting/logging out/uninstalling/reinstalling recommended. It still won't sync. I ended up installing Firefox on the iPad to get the bookmarks from PC. That sync works (takes a while sometimes). But it will not ever update the IOS from the last time it worked (maybe 3 months ago). I can erase IOS bookmarks and reload from iCloud, but the files are months old.

Has this function just been removed?

Hello:

I have 2 profiles in use. 1 for personal use with their respective bookmarks, passwords, and extensions, and I have no trouble syncing with this one. However; profile 2 that is for work use that has its respective bookmarks, passwords and extensions, has become a nightmare.

It happens that I have both profiles on the same computer and when trying to create an account in Firefox, the system asks me to enter the email registered in profile 1, with the warning that bookmarks, passwords and extensions will be mixed.

I mention that I have migrated from Google Chorme to Firefox for speed reasons and because I use windows 7 (I don't like later versions) Now well; in Google Chrome you could create as many sessions as were registered but in Firefox you can't.

Oh! I have been working fine with Firefox but suddenly an error occurs (it has happened to me 2 times in the last 2 months) in which the program closes and all the data of my profiles stored on the pc DISAPPEARS or is deleted (including cache), when I want to open them again:

firefox.exe -P

Then I have to give myself the task of synchronizing profile 1, but profile 2 I have to be importing from my previous Google account or importing a backup Bookmark.

The option to copy and paste the data from Firefox to replace it in the path (supposedly brings with it the data of everything):

C:\ProgramData\Mozilla-1de4eec8-1241-4177-a864-e594e8d1fb38\updates\308046B0AF4A39CB

with Firefox turned off it has not worked for me. Since when opening I see 2 profiles called Default "X" and Default "Z" without data.

This is a headache that if it happens to me, it happens to millions who have 2 or more profiles.

Why can't I sync a second profile? Why do you insist that there can only be one sync per device? Is there a solution for this?

Note: I have read all the tutorials out there and the situation remains the same. Synchronization with 2 or more profiles is never described.

Thank you very much to whoever asked this question!

Everything worked normally for me for 2 years, but recently i decided to reinstall windows. So i did it, downloaded firefox on raw system and now i get this error on some youtube videos. I tried everything i could find but nothing fixed this issue. It pops up with firefox account, without it, in private vindows, in regular ones, with addons, without them. I tried reinstalling firefox, i updated every driver, i use google DNS, but it still doesnt work. In edge, chrome etc. theese videos play fine

I have one Firefox profile with work and personal stuff, and am creating another profile just for work. I have exported the passwords from the first profile and deleted all my personal ones, so the Excel file just have personal passwords. I am looking for a way to import this file into my new Firefox profile. I see how to do that from another browser, but not from a file or another Firefox profile. Any help would be appreciated.

at the very top of firefox browser are 3 rows...the highest row is the list of open tabs.....the middle row is the address bar itself with various icons....the lowest row which is the third row begins with 'import bookmarks' 'getting started' and then various website suggestions.

that 3rd row takes up space and has no useful functionality for me .....i've tried changing the settings but i can't alter it... is there a harmless way to eliminate that third row? thanks

I saw an other article about the same possible but they had a problem with an extension but I dont have that extension but still have the same problem. Whenever i watch twitch or youtube and i alt tab or switch tabs my audio and video stops playing.