Firefox Support Forum

I have been fighting with Xfinity.com for too long now over a "rendering error occurred: invalid time value" message when I log in to their billing function for my account. I am using a Windows 7 PC with whatever Firefox version is the most current.

Among the responses from their "experts," I see something that has to do with "browser add-ons may be causing your problem."

I have looked at my Firefox settings > manage your extensions as well as settings > manage your plug-ins. Under Extensions enabled I have 2: Norton Safe Search and Norton Safe Web. Under Plug-Ins enabled I have OpenH264 Video Codec and Widevine Content Decryption Module. That's all. Could any of these be causing the problem?

Does this "rendering" error have anything to do with Javascript? (I thought Firefox did not support Java so never paid any attention). If it does relate to Javascript, how do I fix my Firefox browser settings to enable it for the Xfinity.com website to see if that fixes anything?

This is so incredibly discouraging.

ONCE AGAIN, I am having Hotmail issues through Firefox, and ONLY through Firefox!!! I had to go to PALE MOON AGAIN to use Hotmail. This is getting REALLY irritating. I can go to ANY OTHER website through Firefox with no issue, but Hotmaill? Oh no, of course not. Your damn browser refuses to cooperate and Hotmail just sits there for the past TWENTY-FOUR HOURS with a waiting symbol and stalls out, refusing to do ANYTHING to refresh the page, and when I try and open an email, Hotmail says, "We're sorry, we can't display that message right now." But when I use Pale Moon, NO PROBLEMS WHATSOEVER!!!! FIx your damn browser to work with Hotmail CORRECTLY this is YOUR problem!!! Since it works FINE through Pale Moon the problem is OBVIOUSLY with YOU!!! I am so sick and tired of YOUR BROWSER stalling out and causing issues ALL THE TIME! DO SOMETHING!!!

Hello, I have downloaded Firefox installer but I couldn't install it. It's giving issue that you need to start over but when i start over again it gives the same issue. I have some pending work to do on my blog so I nee to install it ASAP. How can i fix it? Thanks

For weeks I have been trying to find a solution to getting "Error 15" on certain websites when using Firefox. Opera and Edge have no problems with those sites, only Firefox has problems. I have tried every "fix" that I can find on the Mozilla site and none of them work. Is there anything else I should try before I abandon Firefox? Could it be that Firefox is now unreliable under Win7 Pro 64-bit? If so I will have to abandon it because this computer cannot run Win10 or later.

Hello!

I have been using this userChrome.css code to hide the tab bar if there is only one tab (on Windows):

tab:only-of-type, tab:only-of-type + #tabs-newtab-button {

   display: none !important;

}

#tabbrowser-tabs, #tabbrowser-arrowscrollbox, #tabbrowser-tabs > .tabbrowser-arrowscrollbox {
   min-height: 0 !important;

}

Since one of the recent Firefox updates, this code does no longer work. Maybe because there is a new element in the tab bar: A drop-down list at the right.

Any idea how to make the above code work again?

Peter

firefox does not work on usps scheduler . https://tools.usps.com/rcas.htm

works great with chrome browser

Suddenly today a message appeared at the top of my settings page saying: "your browser is being managed by your organization". I am on a personal computer in my home, the only computer I have. I don't have an organization. Have I been hacked or why is this suddenly on my settings? I am not very tech literate, an older person so can't do very complex things. I don't want anyone but me managing my settings. I am the only one using my computer. I am on Windows 7 Home premium.

I don't know what this falls under, but after the update before the last, my window history has disappeared. I had a window with at least 20 tabs open. I closed 3 Firefox windows, reopened it later, and only 2 of my 3 windows opened. When I went to open the 3rd window, it wasn't there in the history. The tabs aren't in 'Recently closed tabs' and definitely got lost from 'Recently closed windows'. What a disaster, because this is going to cause me a lot of work and I don't remember what was in all the tabs.

Oh, how I wish you had some sort of SAVE ALL option before applying these updates. They are doing weird things, including my bookmark sorting being all messed up after an update. Haven't gotten that to work right since it got messed up. Now, I have a bunch of tabs missing that I can't get back. UGH! Where did they go? I can't possibly know what Firefox will break, which is why we need a SAVE ALL where Firefox knows all the nooks & crannies to save before applying updates. I'm afraid to update anymore, because you're killing my productivity.

Taskbar "jumped or relocated" to right side of page and half icons are gone. I do not want it there - see no way to restore to the bottom. How do I restore taskbar at bottom of home page? Yes, my Firefox is updated - worked fine when I did that. Now it is a mess.

I can't connect to my CapitalOne account. Called them and they said firefox was having issues and I should use another browser which does work. Can this be fixed?

I'm trying to perform the clean reinstall for Firefox on my computer. But, I see the instructions for the uninstall, Delete the Firefox installation folder, which is located in one of these locations, by default:

   Windows: (Note: Check both folders.)
       C:\Program Files\Mozilla Firefox
       C:\Program Files (x86)\Mozilla Firefox 

Being I'm not computer wizard I had trouble finding the location of such folder. But when I accessed my program list in my windows program list I see a program named Mozilla maintenance service. When I click on that I see a format/window to "uninstall C:\Program Files (x86)\Mozilla Maintenance Service\." Is this the program/folder I need to uninstall to complete the proper instructions I need to perform a clean install? If so, when I delete it I then reinstall Firefox once again after the uninstall procedure? Is performing the uninstall procedure going to screw up my Firefox browser and my many bookmarks I have accumulated over the years? Can someone please help and explain? Thank you.

When I try to log-in to my on-line bank account at Synchrony Bank, using Firefox, I get the following error message: Access Denied - You don't have permission to access "http://auth.synchronybank.com/account/login" on this server. This happens everytime there is an update from Firefox and it lasts for days upon days until bingo it works again. I can get into my account using Microsoft Edge, as my brower, but I prefer not to. I do not use Google Chrome. How can this situation be rectified and prevented from happening in the future ?? Any help would be greatly appreciated !!

Thanks in Advance, Joe

Hi, Since yesterday, the addresses of https://**** pages, images, basically everything I put the pointer on appear at the bottom of my screen. I have not installed any new add-ons. How do I stop that annoying url popping up at the bottom of my screen? I tried "userChrome.css"- does not work Firefx ver. 109.0.1

Best regards

Marijan Prevolnik

I have discovered that I prefer closed captions with the letters in yellow rather than white. How can I make this change in Firefox on a computer with the Windows OS. Also, I would like bigger closed captions.

Can someone explain the specific difference between restarting in safe mode and refresh Firefox? I had a very bad experience some years ago I believe refreshing Firefox? But may have been a different Firefox procedure that caused all my trouble when I executed the procedure. Thank you.

I just downloaded the most recent update. After restarting because the browser locked up (as it usually always does eventually) now when I right click to save a picture (save as) firefox opens an invisible (file explorer?) window. At first I didn't realize it was invisible. I could see a flash of the outline of the window but as quickly as that happens it seems to vaporize/minimize and become inaccessible apparently. However because of my inquisitive mind I just realized that isn't exactly so. Because I've seen this happen before with your little "clear recent history" options window. So how I realized it was possible to close this 100% transparent invisible window was by hovering my mouse cursor around the outline of where I saw it was where it flash/minimized. By doing so I could find the edges where my mouse cursor changes from a regular pointer arrow to a two sided window expander arrow used to widen or shorted the sides and tops of windows. By locating this I was able to find the top right corner and click on the location of the invisible red "X" button which actually closes the invisible window. This may sound a little crazy but I repeated the same thing twice now since when I came back to the same page to try and save the same picture after restarting firefox a second time, the same thing happened again. By the way when this happens the browser window locks and I cannot access the file menu or choose to cancel/exit firefox even with the red arrow at the upper corner of the windows. Also the file menus of any other firefox windows I have open also become locked. Previoously when this was happening to me I determined that the only way to fix the issue was to kill firefox from windows Task Manager. But at that time (a few months ago) the same issue was occurring. I can't remember if restarting my computer fixed it but that's my obviousl next tstep in case it's an issue with widows itself. I cannot recall how I this issue was remedied the last time it happened. I'm thinking I may have had to uninstall/reinstall firefox or go basically install the newest version on top of the current version (which is supposed to be updated by the way!) Anyways as you're reading this is not the first time this has happened to me in Firefox. It's happened previously at least once or twice within the past 6 months probably after a firefox update I'm seeming to recall. Why do things get screwed up after updates and changes get made that affect my accessibility? This cannot be just happened randomly. Upon researching the topic there was very little I could find and no soulutions in the firefox help forum. I came across something in my searching that this may be an issue with windows file explorer so I tried restarting windows explorer but that did not help either. I have tried restarting firefox once since the update and that did not fix this issue either. I have not tried restarting my computer but I will be doing that next. It's possible I guess that may fix it. It seems that the last time this happened to firefox it eventually was corrected or somehow fixed itself but I don't remember how. Just prior to the restart after this most recent update my firefox actually locked up as a web page was loading and I was trying to access the menu to clear recent history by pressing Ctrl+Shift+Delete since the file menu was locking. This window never actually opened (or perhaps was also made invisible) prior to getting it to close. With that one it can only happen by canceling or clearing. When this happened all the other firefox windows I had opened turned 100% blank white until the locked one cleared. In the meantime I had disconnected my internet to try and get the one page that wasn't loading to stop. But I also forgot to mention that just prior to this happening, not only right click menus but the firefox menu bar menus were opening black; some with a few icons or words but with others completely blacked out like blank, but black blank. I do use dark mode. This is also not the first time I've ever seen that happen (blank menus) in Firefox. In fact it has happened to my firefox several times over the past year around times that the browser became overloaded or after a recent update. In addition I have major issues with firefox maxing out my memory basically every time I use it one the RAM gets full. Why can't firefox self regulate its memory usage so as not to chronically lock up my entire computer on a regular basis? Why do I have to use add-on extensions designed to perform this feat when it should just be built into basic firefox functionality. Firefox should not allow itself to "hang". If tasks cannot be completed within 30 seconds they need to stop. If memory gets beyond a certain point, web pages need to unload automatically and their memory dumped. It's no big deal. Lastly my bookmark menu is a mess and not easily accessible. I don't like having a both a regular bookmarks list and an "other bookmarks" list. A number of years ago I think bookmarks were automatically saved into the regular bookmarks menu and I don't know that ever really used the other bookmarks section if it was even there at the time. But then at some point the auto-bookmarking bookmarks helper started automatically setting new bookmarks to go into this "other bookmarks" folder. This went on for sometime so I just started using "other bookmarks" until again after some recent update within the past year the bookmark settings were changed back by some developers at Firefox to go back to the regular bookmarks menu. But since I got so used to using the other bookmarks menu and don't really know how to consolidate and organize these all into one section I just feel really upset about it. I don't want to have two bookmarks folders unless I designate a separate one myself. I need a power-users bookmark manager and a bookmarks menu with as many user customizable options/settings as possible. The current bookmarks menu looks like it was designed for children. I want to be able to change the view. I want to be able to get rid of duplicates. I want to be able to re-categorize bookmarks from different folders into new folders by subject matter and cross-link bookmarks from different folders by subject matter or by site visited, etc. I think the current bookmarks system is not user friendly. Anybody ever heard of the Humane Interface by Jef Raskin? How about root tabs inside bookmarks folders for people who save all tabs from windows into bookmark folders? There has to be a better way.