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Lost all tabs from previous session and standard fixes don't work

My Firefox settings are configured to "Open previous windows and tabs" on Startup. This worked fine until this morning, when I lost all of the tabs in my session, includi… (tuilleadh eolais)

My Firefox settings are configured to "Open previous windows and tabs" on Startup. This worked fine until this morning, when I lost all of the tabs in my session, including the pinned ones. The last time I closed Firefox, there was only one window open.

I have already tried these ideas to restore the tabs:

  • CTRL+SHIFT+T: Does nothing
  • CTRL+SHIFT+N: Does nothing
  • Three bar menu -> History -> Recently closed tabs: The list is empty
  • Three bar menu -> History -> Recently closed windows: The option is greyed out
  • Three bar menu -> History -> Restore previous session: The option does not exist in the menu
  • Open user profile folder and open sessionstore-backups folder: There are three files named "previous.jsonlz4", "recovery.baklz4" and "recovery.baklz4". They are each 2KB and contain only an empty tab with the URL "about:home". There are three additional files starting with "upgrade" but they are from too long ago, so they don't contain the tabs I require.

The contents of these tabs are vitally important for my work, so this is causing me significant stress. If anyone can suggest ways to recover my previous tab beyond the documented fixes, I would greatly appreciate it. Thank you so much to anyone who can help!

Asked by king__lego 4 lá ó shin

Last reply by jscher2000 - Support Volunteer 3 huaire ó shin

Ever since the recent update, Firefox automatically opens my previous session on start-up

The box in Settings > General > Startup > Open previous windows and tabs is still unticked. Does anyone know what could be causing it and how to fix it? Thanks… (tuilleadh eolais)

The box in Settings > General > Startup > Open previous windows and tabs is still unticked.

Does anyone know what could be causing it and how to fix it?

Thanks :)

Asked by Redstar2613 5 mhí ó shin

Last reply by zeroknight 5 mhí ó shin

Picture in Picture toggle

Is there a way I can disable the "Pop out this video" button on the video player itself but keep the toggle present in the url bar? I have attached the pictures of what I… (tuilleadh eolais)

Is there a way I can disable the "Pop out this video" button on the video player itself but keep the toggle present in the url bar? I have attached the pictures of what I am talking about I don't like the pop out button appearing on the video everytime I try to use my mouse around the video player but like the option of picture in picture seems like a good option for me.

Currently if I try to disable the button from the menu after right-clicking, it also disable the button present in the url bar.

Asked by Tanishq Chand 5 mhí ó shin

Last reply by cor-el 5 mhí ó shin

slow download on ebay

For the last few days the ebay website is very slow when I open it. If I switch to Chrome, ebay's website loads okay. All other websites seem to load through Firefox with… (tuilleadh eolais)

For the last few days the ebay website is very slow when I open it. If I switch to Chrome, ebay's website loads okay. All other websites seem to load through Firefox with no problem. Any ideas???

Asked by jerryhenning1 5 mhí ó shin

Last reply by zeroknight 5 mhí ó shin

Network Protocol Error

I've been having this problem for a couple of weeks now. When I go to certain websites (that work on Every other browser I use) I get the following error: Network Prot… (tuilleadh eolais)

I've been having this problem for a couple of weeks now. When I go to certain websites (that work on Every other browser I use) I get the following error:


Network Protocol Error

An error occurred during a connection to www.diamondtoolstore.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.


It happens with Lowes & Home Depot - two sites I use every day for work. Now I have to use Chrome or Microsoft Edge -YUCK. I went to your help page and tried everything I could find that may help with this issue and nothing has helped. I see that there are a LOT of other people having the problem as well...Can you please fix it.

Tracie

Asked by Ventura Construction 5 mhí ó shin

Last reply by zeroknight 5 mhí ó shin

Firefox Default Browser Agent

My Windows Task Scheduler contains an entry called "Firefox Default Browser Agent". If I delete it, it returns. If I disable it, it re-enables itself. Can't be modified e… (tuilleadh eolais)

My Windows Task Scheduler contains an entry called "Firefox Default Browser Agent". If I delete it, it returns. If I disable it, it re-enables itself. Can't be modified either. How do I turn it off permanently?

I already have telemetry and automatic updates both turned off.

In about:config default-browser-agent.enabled is set to false

Asked by mokry9999 5 mhí ó shin

Last reply by zeroknight 5 mhí ó shin

How can i update my Mozilla Firefox

I trust this message finds you well. I am currently using Mozilla Firefox as my preferred web browser and I'm interested in ensuring that I have the latest version instal… (tuilleadh eolais)

I trust this message finds you well. I am currently using Mozilla Firefox as my preferred web browser and I'm interested in ensuring that I have the latest version installed for optimal performance and security.

Could you provide a step-by-step guide on how to update Mozilla Firefox to the latest version? I'm curious about the frequency of updates and whether the process varies for different operating systems I'm using windows.

Additionally, I'd like to understand if there are any precautions I should take before initiating the update, such as saving bookmarks or ensuring compatibility with installed extensions.

Furthermore, are there any notable features or improvements in the latest version that I should be aware of? I want to make the most of the browser's capabilities and stay informed about any enhancements.

Thank you in advance for your assistance. I appreciate your expertise in guiding me through the Firefox update process.

Best regards,

Asked by Karla withak 5 mhí ó shin

Last reply by Paul 5 mhí ó shin

Is there literally no way to control firefox's memory usage? I have tried a lot of things and none of them work

Hello, I have been a diehard Firefox user since it was still in Beta. I have been using computers personally since 1994 and professionally since 2004, doing Windows and… (tuilleadh eolais)

Hello, I have been a diehard Firefox user since it was still in Beta. I have been using computers personally since 1994 and professionally since 2004, doing Windows and Linux systems administration. I can and will do whatever (within limits) you need me to do to troubleshoot and resolve this issue, which is otherwise going to cause me to abandon this otherwise excellent browser, perhaps forever. The browser.cache.disk.capacity seems to work, but browser.cache.memory.capacity does not.

Why does firefox not respect the assigned values for browser memory cache (browser.cache.memory.capacity)? Is there anything I can do to limit the memory and processor usage of Firefox and its child processes? Is extension CPU/memory usage constrained by the application values? Is there a way to determine and/or limit the resource usage of extensions?

I have included a number of screenshots documenting its behavior and generated an about:memory report during "normal use". After configuring a number of system variables, I then attempted to determine its resource usage under heavy load.

Open the browser with a couple 2, 3 tabs: ~1GB memory usage Use the browser as "normal" (dozens tabs): ~2GB memory usage Open 100+ tabs from history: The CPU and memory resource usage increases until it consumes all available system resources despite configured values. After killing and restarting the process, the tabs have invisible titles in the extension and browser, and must be closed using Ctrl+W until only a few remain after which the browser can be used normally and again consumes ~1GB.

While I understand "just don't open so many tabs", under some circumstances such as poorly written websites, bugs, etc, even single sites may attempt to claim excessive resources. I sometimes run VMs and such on this machine and in order to retain a responsive system, cannot have applications consuming all of the available resources. I have found one proposed solution that uses an external application, is this the only way?

I am open to allowing Firefox to utilize more of the SSD storage (the 1GB limit was imposed for testing) and would be fine with increased slowness due to disk cache or refetching internetworked resources. However, none of the settings I have changed or attempts I have made appear to be able to limit the memory usage in any way. Additional included screenshots are linked above instead of as attachments due to number. I can share or generate additional reports to assist in troubleshooting.

Thank you! JackD

Asked by jackd2 5 mhí ó shin

Last reply by zeroknight 5 mhí ó shin

online banking. lloyds, UK firefox will not allow!

its the browser, the opperative said when I phoned in about no access. try chrome, they said and true enough it worked. Just shy of 15 years with firefox and now nothing … (tuilleadh eolais)

its the browser, the opperative said when I phoned in about no access. try chrome, they said and true enough it worked. Just shy of 15 years with firefox and now nothing but problems, the cut and paste does not work and now this! pointless staying with them

Asked by changeittillitbreaks 5 mhí ó shin

Last reply by zeroknight 5 mhí ó shin

Malfuntion of "Reload Tab"

The website https://my.strathspey.org/dd/dance/12838/#cribs displays an image, which had a typo [Triangles used to be Traingles] I am using Firefox 119.0.1 under W… (tuilleadh eolais)

The website https://my.strathspey.org/dd/dance/12838/#cribs displays an image, which had a typo [Triangles used to be Traingles]

I am using Firefox 119.0.1 under Windows 10 Home Version 22H2 OS build 19045.3693

I had the page open in Firefox before the owner corrected the typo.

Immediately after the correction was online, all other browsers displayed the corrected version. But even now, hours later, after many resets by "Reload Tab", the Firefox tab still displays the typo-version.

I consider this to be a malfunction. "Reload tab" should bypass all caches, and reload the whole page directly from its server. - Is this a known bug? - If "Reload Tab" does not go to the source bypassing all caches, what doe it do? - Is there a workaround?

Asked by Eric Ferguson 5 mhí ó shin

Last reply by cor-el 5 mhí ó shin

updates delete personal toolbar

everytime you update firefox, i loose my personal toolbar that took me a long time to set up. how do i get it back without all the work? also, what happened to the printe… (tuilleadh eolais)

everytime you update firefox, i loose my personal toolbar that took me a long time to set up. how do i get it back without all the work? also, what happened to the printer icon in the main toolbar?

Asked by kim97 5 mhí ó shin

Last reply by Terry 5 mhí ó shin

how to install firefox or mozilla to my toolbar

i use to have firefox or mozilla on my toolbar, do not know how to question or figure out what i am looking, is it adding tab firefox or mozilla to the toolbar, when on … (tuilleadh eolais)

i use to have firefox or mozilla on my toolbar, do not know how to question or figure out what i am looking,

is it adding tab firefox or mozilla to the toolbar, when on toolbar you would click on firefox for a new tab.

thank you rodney l gandy sr

Asked by RODNEY L GANDY 5 mhí ó shin

Last reply by Cypherdude 5 mhí ó shin

PlayStation log-on breaks Firefox

For the past few days, when I try to log on to PlayStation on Firefox, the sign-in page sits on a loading swirl after inputting email. There's a clear memory leak shown o… (tuilleadh eolais)

For the past few days, when I try to log on to PlayStation on Firefox, the sign-in page sits on a loading swirl after inputting email. There's a clear memory leak shown on Task Manager. The menu bar's right-click doesn't draw properly. FF can't be closed and needs to be terminated. The only extension I have is uBlock Origin disabled for this site.

This website works on Edge.

Attached is the broken menu from right-clicking the menu bar.

Asked by dg.coombes 5 mhí ó shin

Last reply by jonzn4SUSE 5 mhí ó shin

Text boxes duplicating in certain websites

Using text boxes such as comment sections in certain sites will "duplicate" the boxes directly over it Scrolling up and down will lock the boxes on screen and leave multi… (tuilleadh eolais)

Using text boxes such as comment sections in certain sites will "duplicate" the boxes directly over it Scrolling up and down will lock the boxes on screen and leave multiple traces of the text boxes Refreshing the page will remove the boxes temporarily but will happen again Happens inconsistently on multiple websites Site shown under is dcinside.com

Asked by Bada 5 mhí ó shin

Last reply by zeroknight 5 mhí ó shin