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Cannot access Youtube anymore (sec_error_unknown_issuer)

Dear Mozilla support, since a few weeks now I have a strange problem with Firefox on my Windows 7 machine: When trying to open Youtube and often when trying to open Googl… (閱讀更多)

Dear Mozilla support,

since a few weeks now I have a strange problem with Firefox on my Windows 7 machine: When trying to open Youtube and often when trying to open Google (and any google related sites such as google docs) it shows me the error "sec_error_unknown_issuer" - a bad certificate. I have already tried a few things like following the advice in the "how to troubleshoot sec_error_unknown_issuer" guide, however nothing has worked so far. I have also made sure that my PC time is correct. The issued certificate is by "BullGuard SSL Proxy CA". I have checked in this direction and found a Bullguard forum thread with a similar issue suggesting a run command that apparently resets or renews the certificates but it has not changed anything. Furthermore, an antivirus scan with Malwarebytes and Bullguard has found nothing. Launching Firefox in safe mode did not prevent the problem. Youtube and Google work fine in Internet Explorer.

The first time I got this problem I have tried to do a windows restore point to the last update where I was sure the problem was not yet present. However this resulted in my windows user account becoming corrupted so I had to create a new one. The problem seemed solved for a few days until it reoccurred. I cannot think of anything else to do now. You are my last hope. Thank you for reading.

Baryonyx 於 5 年前 詢問

jscher2000 於 5 年前 解答

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restoring minimize and expand toggles in windows 10

I'm in Windows 10. Was using it well (I'm not computer literate) and after several months of doing so found that the minimize and expand toggles had disappeared. My Firef… (閱讀更多)

I'm in Windows 10. Was using it well (I'm not computer literate) and after several months of doing so found that the minimize and expand toggles had disappeared. My Firefox version is 44. I've stepped through the following:

Trouble shoot and diagnose Firefox problems - have reinstalled, refreshed 
 Went to Support Forum and deleted the xulstore.json file (Have trouble figuring out how to close and restart firefox)

None of this works. I love Firefox and have been using it for over 5 years maybe longer. But I'm really frustrated as I don't have tech skills.

Any help even with the basics like exit firefox, close firefox and restart firefox would help. A simple close or exit firefox switch would simplify all this for people like me. All I want is my Firefox browser with its basic functions back. Paul

wasagapaul 於 5 年前 詢問

cor-el 於 5 年前 解答

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When I refreshed Firefox, I lost all my data (bookmarks, passwords, etc.)

I refreshed Firefox and instead of selecting "Default User," I created an user with my name. When Firefox opened, ALL of my bookmarks, passwords, etc. were gone. There is… (閱讀更多)

I refreshed Firefox and instead of selecting "Default User," I created an user with my name. When Firefox opened, ALL of my bookmarks, passwords, etc. were gone. There is a file on my desktop called Old Firefox Data - but how do I use it? Better yet, how do I get back to the "Default User" dialog box??? Oh, please help...

Joymaker 於 5 年前 詢問

cor-el 於 5 年前 解答

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Vimeo videos play very choppy and jerky even though have latest versions. How can I fix this?

I have the latest firefox version as well as the latest Flash player but still the videos are choppy and jerky. Youtube videos are just fine...it is only vimeo videos and… (閱讀更多)

I have the latest firefox version as well as the latest Flash player but still the videos are choppy and jerky. Youtube videos are just fine...it is only vimeo videos and the problem is DEFINITELY with firefox as they play just fine in internet explorer. Please help.

timberewolf 於 5 年前 詢問

timberewolf 於 5 年前 解答

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Certain sites dont run a script instead they download and I have to use chrome

My smile banking wont show me a pdf statement when I click the link it downloads the script file instead. getDomesticPDFStatement I stopped using firefox because of this … (閱讀更多)

My smile banking wont show me a pdf statement when I click the link it downloads the script file instead. getDomesticPDFStatement

I stopped using firefox because of this same issue on a french tax site and thought Id give it another go. I'd blame the sites except the problem is solved by using chrome instead.

patbell101 於 5 年前 詢問

patbell101 於 5 年前 解答

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Why are fonts appearing as dingbats?

In any Firefox browser window that includes account-based content, such as an email newsletter building web app like MyEmma, or a domain hosting account page, much of the… (閱讀更多)

In any Firefox browser window that includes account-based content, such as an email newsletter building web app like MyEmma, or a domain hosting account page, much of the content shows up as dingbats instead of in the specified font (Times, Arial, etc.). I tried to upload a screen shot, but Firefox just kept spinning without success when it came to my 270kb jpg file.

I checked my font management software (Suitcase Fusion 5), two other browsers (Chrome and Safari) and my fonts, but I have not found any issues. The only other culprit I might identify as far as a potential cause is a recent update I made to my Mac OS, from Mountain Lion to Mavericks. But, no seeing any related questions here in the community forum, I have exhausted all the troubleshooting directions I can think of, and can't seem to figure out myself how to fix this debilitating font issue. Any ideas?

MeridithBP 於 5 年前 詢問

cor-el 於 5 年前 解答

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how to stop Links opening in Internet explorer

Some links always open in Internet explorer, mostly microsoft sites Steps to simulate Search google for "microsoft product design" it should list as below Microsoft Desig… (閱讀更多)

Some links always open in Internet explorer, mostly microsoft sites

Steps to simulate Search google for "microsoft product design" it should list as below Microsoft Design https://www.microsoft.com/en-us/design

click it and it opens in IE, how to stop this and open it only in Firefox

johnborgjacob 於 5 年前 詢問

johnborgjacob 於 5 年前 解答

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Homepage keeps reseting to Firefox default

My Homepage keeps reseting to Firefox default and I can't get it to stick. I recently installed Norton Internet Security for Mac. I'm not sure if that changed anything … (閱讀更多)

My Homepage keeps reseting to Firefox default and I can't get it to stick. I recently installed Norton Internet Security for Mac. I'm not sure if that changed anything but not that I can tell. I've seen similar questions asked here but they offer solutions for Windows and not Mac.

ae6dx 於 5 年前 詢問

FredMcD 於 5 年前 解答

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I can't find my bookmarks after I updated firefox on my windows xp sp3

I can't find my bookmarks after I updated Firefox. I did a search and the "search results" of the drive found bookmark files with the extension JSONLZ4. I can't open, vi… (閱讀更多)

I can't find my bookmarks after I updated Firefox. I did a search and the "search results" of the drive found bookmark files with the extension JSONLZ4. I can't open, view or copy/paste. I went to your help section and still could not find a solution. Thanks for all you do. MT.

MarcusTriton 於 5 年前 詢問

the-edmeister 於 5 年前 解答

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How to stop Options keep coming up in another pane with main pane when first enter Firefox(2 panes come up at once)

When first entering firefox for main screen (bbc homepage) a second pane Options (General) comes up at the same time asking for info on Homepage (which is bbc) which is a… (閱讀更多)

When first entering firefox for main screen (bbc homepage) a second pane Options (General) comes up at the same time asking for info on Homepage (which is bbc) which is already set for BBC. I cannot stop the second pane Options (general)coming up. Firefox is 44.0.2. I have reinstalled firefox 3 times but each time the option pane general) comes up auto with the main pane (bbc) I have also refreshed firefox but that did not work either. Both panes come up at the same time.

poppypoppy 於 5 年前 詢問

cor-el 於 5 年前 解答

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Firefox crashes

Hi, I see Firefox crash on opening a certain pptx file previewing. The pptx file seems transformed into pdf for previewing and the original pptx file size is 5.5MB. Crash… (閱讀更多)

Hi, I see Firefox crash on opening a certain pptx file previewing. The pptx file seems transformed into pdf for previewing and the original pptx file size is 5.5MB. Crash happens almost 30 seconds to 50 seconds after opening the preview image. Firefox is today's latest 44.0.2 OS is Windows 7 and 10 both resulted in crash. 3 different PCs reproduce the crash. I am also asking the application service provider's help desk, but Firefox crashes and I cannot save HAR file and send it to them.

Example: bp-65cf90ba-f6b6-4448-a8d3-46a612160213

Any help is welcome, like how I can get meaningful information to the application service provider, or workaround I can take to avoid the crashes. At least I want to know which party, mozilla or the application service provider should handle this issue.

Thanks in advance. boxvpndem

boxvpndem 於 5 年前 詢問

philipp 於 5 年前 解答

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Long running script giving "continue" "debug" and "stop script" dialogue box. Stopping does not stop script and have to use task mgr to close firefox.

See the attachments. Firefox is having difficulty with a script and it appears to be having difficulty with a script in outlook.com or at least with one of the internet s… (閱讀更多)

See the attachments.

Firefox is having difficulty with a script and it appears to be having difficulty with a script in outlook.com or at least with one of the internet sites i have open, outlook.com, gmail, or outlook contacts "people". I get this script error and slow response often but not every time i'm logged in. However, it always happens with outlook.com open. Scrolling through the debug window has some references to outlook.com. It is always this same script and when it happens, stopping the script or clicking continue does nothing but hang up firefox. I have to use task mgr to kill firefox and then restart it. Can i do anything on my end to fix this very annoying issue? I have clicked on share data with outlook.com open but i'm not getting this script error at this time.

JetSkingDog 於 5 年前 詢問

FredMcD 於 5 年前 解答

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Why does Firefox eat memory and crash when I connect to YRC.com?

When I go to YRC.com to track a shipment Firefox just starts eating memory until the application or the entire system bogs down. I thought it was a website issue but I ca… (閱讀更多)

When I go to YRC.com to track a shipment Firefox just starts eating memory until the application or the entire system bogs down. I thought it was a website issue but I can get there with another browser. Firefox becomes totally unresponsive and I have to kill it with task manager. Thanks

Bulbman 於 5 年前 詢問

FredMcD 於 5 年前 解答

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have firefox 44 on my mac and yahoo toolbar won't stop verifying and install it-it freezes on verifying

big problem STILL with yahoo toolbar, ironically, solved it on my windows based computer, but i see now with ff44 it is not woring and no matter how many times i go to mo… (閱讀更多)

big problem STILL with yahoo toolbar, ironically, solved it on my windows based computer, but i see now with ff44 it is not woring and no matter how many times i go to mozilla firefox addons and try to install, it pops up with verifying and then never can I get to hit the install button next to it as it just keeps on verifying ...on and on, and i am very frustrated, I need to make my yahoo toolbar work as i have many quick icons to do things, and i use it in my windows based but also need it in my macbook too. please tell me something new, already tried the about config turn from true to false ( as listed in other mozilla forums for fixing/in past, the yahoo toolbar) I will hope to hear from someone soon.

dobydoby 於 5 年前 詢問

dobydoby 最近回覆 於 5 年前

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Youtube control buttons are missing on some sites

I have just installed Firefox. On some pages the controls (pause/play, volume, full screen, etc.) of the embedded youtube videos are missing. Actually the controls are wo… (閱讀更多)

I have just installed Firefox. On some pages the controls (pause/play, volume, full screen, etc.) of the embedded youtube videos are missing. Actually the controls are working just their icons are not visible. For example it is possible to pause the video by clicking on the bottom left corner.

Examples: Missing controls: http://www.techspot.com/news/63930-lasers-may-able-propel-spacecraft-mars-significant-fraction.html Working controls: http://www.iflscience.com/space/watch-physicist-brian-greene-explain-gravitational-waves-stephen-colbert

The browser is 64 bit version of Firefox 44.0.2 running on Windows 10. Adobe Flash player is not installed. All add-ons were disabled for testing.

What could be the problem? Is it a bug, or do I need to configure something?

peterbandi 於 5 年前 詢問

jscher2000 於 5 年前 解答

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'Frequent / Most Visited Pages' page

I used to have a 'Frequent / Most Visited Pages' page as my home page and new tab page, and I've got a new PC and reinstalled Firefox, but now I can't find it. Is there a… (閱讀更多)

I used to have a 'Frequent / Most Visited Pages' page as my home page and new tab page, and I've got a new PC and reinstalled Firefox, but now I can't find it. Is there a URL / option for this page that I can find somewhere?

matt.amos 於 5 年前 詢問

cor-el 於 5 年前 解答

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After Firefox is minimized to the task bar and then opened up again the graphics sometimes crash - why?

Got a brand new MSI laptop and ever since installing Firefox the look of the web page crashes some elements (look white) if the program has been minimized and then opened… (閱讀更多)

Got a brand new MSI laptop and ever since installing Firefox the look of the web page crashes some elements (look white) if the program has been minimized and then opened up again. Usually, when moving the mouse over it pops back again. But it is annoying and I'm thinking of switching to another browser instead. Latest nVidia driver.

firefoxcatcher 於 5 年前 詢問

John99 於 5 年前 解答