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  • Archived

Possible bug/design issue of Firefox on a page refresh regarding a cached asset under `Cache-Control: no-cache` with an etag

Crossposted from SO: What is the exact behavior of Firefox on a page refresh regarding a cached asset under `Cache-Control: no-cache`? Where can I find a document that s… (read more)

Crossposted from SO: What is the exact behavior of Firefox on a page refresh regarding a cached asset under `Cache-Control: no-cache`? Where can I find a document that specifies it?

On MDN regarding how `Cache-Control: no-cache` is supposed to work, I see that "the stored response MUST always go through validation with the origin server first before using it". Browsers use etags for this.

(Note: `Cache-Control: no-cache` actually allows caching; it isn't `no-store`; don't want that to confuse any answers.)

I author a web site that has a ordinary `<link>` to the main css file, with `Cache-Control: no-cache`, and sometimes Firefox makes the request as specified (an "etag request") which results in a 304 usually (or a 200 with the content if not).

But sometimes Firefox avoids such an "etag" request, especially when I press F5 to do an ordinary refresh. Chrome and Edge seem to always make these "etag requests", as I expect.

So that seems to go against MDN. **What is the intended behavior, and where is it documented?** And finally, is there anyway to coax Firefox into making the etag request on every F5 refresh?

Here are screenshots of the behavior: first request, and then after pressing F5 to refresh: https://i.stack.imgur.com/37zhu.png https://i.stack.imgur.com/ezpYl.png

Asked by pszalapski 1 year ago

Last reply by jscher2000 1 year ago

  • Archived

firefox 83 / firefox prevented this page from automatically redirecting

The answers I found on the internet re firefox prevented this page from automatically redirecting do not apply to my version of Firefox . There is no ADVANCED under Opti… (read more)

The answers I found on the internet re firefox prevented this page from automatically redirecting do not apply to my version of Firefox . There is no ADVANCED under Options/General.

When I get firefox prevented this page from automatically redirecting, the ALLOW often does not work.

How can I get rid of this feature?

Asked by cori2na 1 year ago

Last reply by Max1234-ITA 8 months ago

  • Archived

Update win 10 20H2 firefox problems

I installed the windows update for Windows 10 20H2, and I'm getting graphical artifacts on websites and firefox home page. This can be see on google maps while moving aro… (read more)

I installed the windows update for Windows 10 20H2, and I'm getting graphical artifacts on websites and firefox home page.

This can be see on google maps while moving around the map.

Tried on Microsoft edge and didn't happen

Is there an ETA to fix this?

My Firefox version is 83.0b2 (64-bit).

And I'm on the latest drivers for my graphics card.

Asked by malakiax07 1 year ago

Last reply by cor-el 1 year ago

  • Archived

HIgh memory usage seems to continually increase!

I realise that Firefox uses up a lot of Memory (particularly as it tries to run each Tab separately). However, my Firefox seems to keep increasing its usage! I can start … (read more)

I realise that Firefox uses up a lot of Memory (particularly as it tries to run each Tab separately). However, my Firefox seems to keep increasing its usage!

I can start with a number of Tabs open & (after refreshing each Tab - to ensure it is "lice" & "active") I will get (according to Windows Task Manager) about 1,300MB in use.

Without opening up any more Tabs & without trying to run any Web-Based Videos, over a period of a few hours it will increase & increase & increase - perhaps getting up to 4,000MB!

I've cross checked with "about:performance" (to open FF's own Task Manager), to show the individual Tab usage, & that NEVER totals up to anywhere near the figures shown by the Windows Task Manager!!

Obviously, my FF is fully up to date!

Any comments!

Asked by John-B 1 year ago

Last reply by TNorth 8 months ago

  • Archived

Firefox Problems with using NVIDIA Webseite

Hi, i found a Problem with the Nvidia Website https://www.nvidia.de/Download/index.aspx?lang=de When i Search for Driver Download, i choose "Producttype" and then when ch… (read more)

Hi, i found a Problem with the Nvidia Website https://www.nvidia.de/Download/index.aspx?lang=de

When i Search for Driver Download, i choose "Producttype" and then when choosing "Product Series" the Website allways Resets to Start.

I also Informed Nvidia about the Problem, but it is only on Firefox. Im on Linux (Ubuntu 18.04) and use Firefox in Latest Version 83.0 no addons.

I also Try Chromium and other Browsers but this Problem only happens on Firefox.

Greetz. Vinz

Asked by cvinz 1 year ago

Last reply by brandyball200 12 months ago

  • Archived

Refresh deleted everything

Hi! I just did a Firefox refresh to fix the slow browser issue and instead of saving all of my bookmarks and passwords, everything was deleted. I've tried to restore but … (read more)

Hi! I just did a Firefox refresh to fix the slow browser issue and instead of saving all of my bookmarks and passwords, everything was deleted. I've tried to restore but that is failing as well. How do I get everything back?

Asked by cstaten 1 year ago

Last reply by FredMcD 1 year ago

  • Archived

changing languages, even german is choosed!

I understand also danish and english but it makes me crazy one side is danish , the next mozilla side english and in between german, if I am lucky. I like to drop the fir… (read more)

I understand also danish and english but it makes me crazy one side is danish , the next mozilla side english and in between german, if I am lucky. I like to drop the firefox , if I cannot get this fixed!

Asked by Stefan Stolle 1 year ago

Last reply by cor-el 1 year ago

  • Archived

Browsing History will not delete

Updated to Firefox 83 and now my browsing history in 'History' and in 'Show All History' will not delete despite my preference settings being correct and having tried del… (read more)

Updated to Firefox 83 and now my browsing history in 'History' and in 'Show All History' will not delete despite my preference settings being correct and having tried deletion in all possible ways. Something is wrong because after I have clicked 'Clear Recent History' or closed Firefox with 'Delete on closing' selected, the preference page shows a change in the kb being used to store history, yet the browsing history has not been cleared. Does anyone know how to fix this problem or let Firefox know?

Asked by mujodav66 1 year ago

Last reply by cor-el 1 year ago

  • Archived

Missing Session Restore Files

I have "Restore previous session" checked but when I restart my computer Firefox does not start with the previous session. Currently I have many tabs open and need to res… (read more)

I have "Restore previous session" checked but when I restart my computer Firefox does not start with the previous session. Currently I have many tabs open and need to restart Windows but I looked in my profiles folder and do not see any of the session files and backup folders.

Why are the session files (sessionstore.jsonlz4, recovery.jsonlz4, recovery.baklz4, previous.jsonlz4, sessionstore-backups) missing from the profile folder?

I can't restart Windows because I don't want to lose my tabs. How do I get Firefox to save the session to disk?

Asked by pkxpzwceeortawjjth 1 year ago

Last reply by cor-el 1 year ago

  • Archived

Search engine switched to Bing

My browser recently updated to 83.0 and the search engine switched to Bing. When I go to Preferences - Search, the default search engine is listed as Google. Even if type… (read more)

My browser recently updated to 83.0 and the search engine switched to Bing. When I go to Preferences - Search, the default search engine is listed as Google. Even if type something in the bar and then click on the Google icon, it searches on Bing. If I click on the DuckDuckGo icon, it searches on DuckDuckGo. How can I switch my search engine to Google?

Asked by ravenwolfhail 1 year ago

Last reply by FredMcD 1 year ago

  • Archived

Secure Connection Failed

I have run across a few websites that result in "Secure Connection Failed" when I try to go to them. The last site on which this happened is the following. Using the s… (read more)

I have run across a few websites that result in "Secure Connection Failed" when I try to go to them. The last site on which this happened is the following. Using the shorter URL "https://e.ab.advancedbionutritionals.com" also shows the problem.

https://e.ab.advancedbionutritionals.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

What I see on the error message page is this:

Secure Connection Failed An error occurred during a connection to e.ab.advancedbionutritionals.com. Cannot communicate securely with peer: no common encryption algorithm(s). Error code: SSL_ERROR_NO_CYPHER_OVERLAP

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

I can get to this site using other browsers like Chrome and Safari. What bothers me here is the text "Cannot communicate securely with peer: no common encryption algorithm(s)". This makes me believe that Firefox is not supporting an encryption algorithm, which other browsers do. The question is: why does Firefox not support the same set of encryption algorithms, which other browsers do?

Asked by era45 1 year ago

Last reply by FredMcD 1 year ago

  • Archived

Dark mode

For some reason, in google search "images" are displayed in the dark mode. Everything else is in light mode and it's really annoying. I tried everything, changing my syst… (read more)

For some reason, in google search "images" are displayed in the dark mode. Everything else is in light mode and it's really annoying. I tried everything, changing my systeme theme from light to dark and vice versa and i even tried the colour customization option in mozilla, but nothing happened, it's still in dark mode.

Asked by rejtarv 1 year ago

Last reply by fireup 1 year ago

  • Archived

Can't connect to Google.com, potential security issue

I can't seem to connect to Google.com anymore. I get Did Not Connect: Potential Security Issue Firefox detected a potential security threat and did not continue to www.go… (read more)

I can't seem to connect to Google.com anymore. I get

Did Not Connect: Potential Security Issue

Firefox detected a potential security threat and did not continue to www.google.com because this website requires a secure connection.

What can you do about it?

www.google.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.

The issue is most likely with the website, and there is nothing you can do to resolve it.

If you are on a corporate network or using anti-virus software, you can reach out to the support teams for assistance. You can also notify the website’s administrator about the problem.

as the error. I've tried various things like deleting certificates, refreshing firefox, and even uninstalling firefox. Nothing works and I don't want to go back to Edge. Google.com works fine on edge, and I have a document saved as a start up tab that works fine on firefox. Drive also doesnt work, but accounts.google.com works so I can sign in.

Asked by i0brendanhansen 1 year ago

Last reply by jscher2000 1 year ago

  • Archived

Will the import process for bookmarks import duplicates or will it filter out the copies?

I've used FF for years. I recently tried Chrome and imported to Chrome from FF all my FF bookmarks and data. While using Chrome I've added book marks and more. I want to … (read more)

I've used FF for years. I recently tried Chrome and imported to Chrome from FF all my FF bookmarks and data. While using Chrome I've added book marks and more. I want to import back to FF from Chrome bookmarks that were added into Chrome. Is FF's import tool smart enough to filter out from the import all the copies that already exist in FF? Or what is the best method for importing everything?

Asked by lolaiii 1 year ago

Last reply by cor-el 1 year ago

  • Archived

Delete EMail

I've been using Firefox as an email program for years and I'm very satisfied. Well, after the last update about 1 month ago, you can no longer delete your emails properly… (read more)

I've been using Firefox as an email program for years and I'm very satisfied. Well, after the last update about 1 month ago, you can no longer delete your emails properly. they are still crossed out and shown with a red cross. The rubbish bin folder is also no longer there. How can I permanently move the mails to the paper basket and delete them permanently from there? Thank you

Asked by firecreek2017 1 year ago

Last reply by Andrew 1 year ago

  • Archived

picture-in-picture

This website bellow, tells me how I can enable and disable picture-in-picture.. I don't seem to have this option? has it moved? https://support.mozilla.org/en-US/kb/turn-… (read more)

This website bellow, tells me how I can enable and disable picture-in-picture.. I don't seem to have this option? has it moved?

https://support.mozilla.org/en-US/kb/turn-picture-picture-mode

Why does Mozilla list this on their website if it is outdated?? It's like doing a search on Google in 2020 and getting results from 2014 version of Firefox. it is completely irrelevant. I didn't think Mozilla was as bad as Google.

Asked by FARCRY 1 year ago

Last reply by cor-el 1 year ago

  • Archived

tradingview

hi there i have a very strange problem the tradingview is not working on firefox, not even in private mode but on other browsers it works great i took an screenshot and… (read more)

hi there i have a very strange problem the tradingview is not working on firefox, not even in private mode but on other browsers it works great i took an screenshot and shared it with u

i have tried everything you can imagine, clearing everything, turning off securities, allowing all cookies, turning off or on my vpn, removing all of my extensions

none of them work

oh its good to know that i can not even upload the screen shot here so i upload it on a website https://imgur.com/a/n0azBk1 https://imgur.com/a/MswbMbo

best regards

Asked by ali.afshany 1 year ago

Last reply by FredMcD 1 year ago

  • Archived

Adding websites to location permissions

How can I add a website to location permissions? When I click on settings next to permissions/location I get a search box and a larger empty box that is meant to list web… (read more)

How can I add a website to location permissions?

When I click on settings next to permissions/location I get a search box and a larger empty box that is meant to list websites that have permission to access my location. how do I add the website address? If I add it to the search box & hit return, nothing happens. I cannot get text into the larger box.

Asked by mlutwak 1 year ago

Last reply by TyDraniu 1 year ago