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Firefox error: video format or MME type is not supported

Client said that video cannot load on firefox except other browsers. It shows "Video format or MIME type is not supported". Firefox version is 33.0.3. Video is mp4 forma… (læs mere)

Client said that video cannot load on firefox except other browsers. It shows "Video format or MIME type is not supported". Firefox version is 33.0.3. Video is mp4 format.

Stillet af Myat for 5 år siden

Besvaret af Myat for 5 år siden

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Tabs with ads keep randomly opening

every time i open fire fox, a random tab opens roughly every twenty seconds, each day on a different site. yesterday was some games site, today was this: https://www.lott… (læs mere)

every time i open fire fox, a random tab opens roughly every twenty seconds, each day on a different site. yesterday was some games site, today was this: https://www.lotterymaster.com/free-lottery/11?offer_id=102&aff_id=54&SourceId=355&CreativeId=18377777&LineItemId=5729187&PublisherId=738709&SectionId=13947420&aff_sub=000074083021da0534d448ed7724a4b4b9c16&incentive_code=6b20c5b52be7e238414afc9baf80eeb7

(sorry for long link) i have tried disabling some of my add-ons to no avail. i have scanned my computer with Avast! and malware bytes. i haven't been on any dodgy sites when it happens. i have just realised, but i think it might be every time i click a link, a new page with an ad will open. it only happens on any link once.

any ideas?

Stillet af klinx104 for 7 år siden

Besvaret af jscher2000 for 7 år siden

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Adobe Flash crashes endlessly, reset or update does no good

I have dealt with this for years. I have "reset" Firefox numerous times, I have uninstalled Adobe Flash and reinstalled version 16.0.0.235. After I uninstalled and update… (læs mere)

I have dealt with this for years. I have "reset" Firefox numerous times, I have uninstalled Adobe Flash and reinstalled version 16.0.0.235. After I uninstalled and updated it ran for a while but I am back to the "Flash is busy" message. The only way I can go on is to stop the plug in, or disable it, but of course then I have no video. I installed "Videowithoutflash" (I think that was the name of it listed with Firefox extension and highly reviewed, and it all ran fine for about a day. But then the next day no videos would play unless I enabled flash, and then it soon starts crashing again. This is a problem for years now. I have been through many forums trying to find an answer, nothing works, or if it does not for long. Is there not some way to get rid of Adobe Flash and play videos? Are there any browsers that don't use flash for viewing videos? Help! Thanks in advance Bill

Stillet af BillyBob58 for 5 år siden

Besvaret af FredMcD for 5 år siden

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ssl_error_no_cypher_overlap what does this mean?

Cannot communicate with peer no common encryption algerithimth(s) Spelling maybe incorrect! error code ssl_error_no_cypher_overlap authenticity of received data could not… (læs mere)

Cannot communicate with peer no common encryption algerithimth(s) Spelling maybe incorrect! error code ssl_error_no_cypher_overlap authenticity of received data could not be found

I don't do technical and this is all foreign to me , no idea. Just trying to do the National Lottery which I have done before, all else seems ok. Will not let me into this site

Help needed please

Stillet af tandy for 5 år siden

Besvaret af cor-el for 5 år siden

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I got error "SSL received a record that exceeded the maximum permissible length. (Error code: ssl_error_rx_record_too_long)" when accessing google.com

Today when accessing gmail, gmap and google related sites, I suddenly got error (this never happened before), Secure Connection Failed An error occurred during a connect… (læs mere)

Today when accessing gmail, gmap and google related sites, I suddenly got error (this never happened before), Secure Connection Failed An error occurred during a connection to mail.google.com. SSL received a record that exceeded the maximum permissible length. (Error code: ssl_error_rx_record_too_long)

This happens only when accessing google from Firefox. With other browsers, no such problem occurs. So this is a site and browser specific problem. I tried everything I know to fix this problem, including clear cache & cookie, remove cer8 database file, reset Firefox, change to no proxy, etc. But all failed. I need help on this. What's hell going on?

Stillet af yzhang103 for 6 år siden

Besvaret af cor-el for 6 år siden

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My printer is suddenly printing in a font so small I can hardly see it

Anything I print that is not from the Internet or email is fine. Any and all saved documents etc print as they always have. But suddenly anything from the Internet or a… (læs mere)

Anything I print that is not from the Internet or email is fine. Any and all saved documents etc print as they always have. But suddenly anything from the Internet or any emails that I print are so small I can hardly read them.

Stillet af CritterSitter for 7 år siden

Besvaret af the-edmeister for 7 år siden

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I keep getting: " Your session has expired. Please log in again" whenever I try to access my e-mail.

EVERY time I try to access my e-mail through Firefox I instantly get this message: "Your session has expired. Please log in again". My provider is Time/Warner, and my int… (læs mere)

EVERY time I try to access my e-mail through Firefox I instantly get this message: "Your session has expired. Please log in again". My provider is Time/Warner, and my internet access is working fine. Firefox is also working well except for this e-mail issue; I can access my stored bookmarks, etc., no problem. I can even access my Time Warner e-mail through another browser (Safari), so I know there is currently nothing wrong with the Time/Warner site's built-in e-mail engine. I have already tried reinstalling Firefox, including several different versions, to no avail. I've also tried "resetting" per your troubleshooting instructions, and restarting in Safe Mode. No success. This issue began suddenly a couple days ago—no warning. To my knowledge I have received no viruses or malware in recent months. Tech Support at Time/Warner tells me other customers are having this same problem lately. Suggestions? Thanks, Jeff

Stillet af jefftytoo for 7 år siden

Besvaret af cor-el for 7 år siden

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Opening a new tab (plus button) ALWAYS brings up 'Delta Search' Everything I try refuses to change it. Even reset Firefox etc ! :( Help please!

Basically whenever I open a new tab 'Delta ALWAYS comes up' as the default search! :( I have reset Firefox. I have reset to blank and to Mozilla as default. I don't unde… (læs mere)

Basically whenever I open a new tab 'Delta ALWAYS comes up' as the default search! :(

I have reset Firefox. I have reset to blank and to Mozilla as default. I don't understand your instructions about malware (but is it???) resetting and too nervous in messing up my laptop to try ! :(

I now detest Delta Search and want it totally removed forever.

Nothing gets rid of it.

Only started about a month ago-ish. I run Win 7 Professional. Intel 3rd Gen Intel Core i7-3740QM Processor 32 mg ram Nvidia Quadro K3000M video card

Stillet af AuroraMagic for 7 år siden

Besvaret af jscher2000 for 6 år siden

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How can I restore a previous session after a crash when it's not offered?

We had a power outage and when my computer came back on it just opened up a blank session. Restore previous session was not offered as an option - it was greyed out. I (p… (læs mere)

We had a power outage and when my computer came back on it just opened up a blank session. Restore previous session was not offered as an option - it was greyed out. I (probably stupidly) tried closing and reopening. I've now read a lot of ways to restore them, but many of them I don't really understand. I've found the profile folder, and made a copy of the sessionstore files. Instructions say to right click and press properties and then select "previous versions". This is where I come unstuck. I don't seem to have that as an option. There are tabs "general", "script" "security" and "details" all with multiple sub-options. I can't seem to find anything that says previous versions. I even followed one instruction that said to do this on the folder rather than the file, but there was no option titled "previous versions" on that either. I'm (unfortunately) using windows 8.

Stillet af simonanderin for 6 år siden

Besvaret af jscher2000 for 6 år siden

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My PDF files are now identified as Firefox HTML documents, how to fix it?(only icons changed, extension is still .pdf)

After I uninstalled Firefox, all icons returned to usual PDF icons and files were identified as "PDF" files, but when I installed Firefox (31.0) again, all PDF files agai… (læs mere)

After I uninstalled Firefox, all icons returned to usual PDF icons and files were identified as "PDF" files, but when I installed Firefox (31.0) again, all PDF files again are identified as "Firefox HTML document". Extensions do not change, they are always .pdf, and files automatically open in Adobe Acrobat, but icons became "firefox HTML documents" icons and it is very confusing.

Stillet af js.bigata for 6 år siden

Besvaret af Robinson3 for 5 år siden

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2 firefox.exe running in the background whenever I open Firefox

Whenever I open Firefox, there are two firefox.exe running the background whenever I open the browser. Whenever I try to close the second one, it crashes all of the tabs … (læs mere)

Whenever I open Firefox, there are two firefox.exe running the background whenever I open the browser. Whenever I try to close the second one, it crashes all of the tabs that are on the browser, and whenever I reload the tabs, it pops up again.

I've scanned my computer multiple times with multiple anti-viruses, but there was no viruses to be found. I've also disabled the plugins that I thought were the issue, and refreshed Firefox, but it was still there. I restarted my computer, no luck in doing that. Uninstalling and reinstalling Firefox didn't even do the trick either.

The double processes sky-rockets my RAM and CPU, and it's starting to get annoying. Please help! I appreciate any cooperation!

Stillet af TheCameraEye97 for 3 år siden

Besvaret af jscher2000 for 3 år siden

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Pop ups and little ads keep appearing on the screen even though I have pop-upblocker on. How do I stop it?

Randomly when I turn on firefox, go to a new page or open a new tab I will either get a full blown pop up (Almost all of them are awful but one was actually a full TV epi… (læs mere)

Randomly when I turn on firefox, go to a new page or open a new tab I will either get a full blown pop up (Almost all of them are awful but one was actually a full TV episode which threw me for a loop. And it was to a show I actually like) or I will get a little tiny add or video in the bottom right hand corner. Most of the time, though HIGHLY annoying, I can just close it down. But when it pops up when I'm trying to watch something on Netflix I have to refresh the page in order for it to go away. I have popup-blocker on but I'm still getting popup and little ads like crazy. I've run virus and malware scans. But it doesn't find anything. I don't want to reinstall firefox if possible because I don't want to have to copy my 50 bookmarks....anything else I can do? Help?

Stillet af Miranell for 7 år siden

Besvaret af the-edmeister for 7 år siden

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Why has the function of my up & down arrow keys changed? Did I click something by accident? Help please?

Why has the function of my up & down arrow keys changed? Did I click something by accident? Help please? (My new kitten *might* have stood on something on my keyboa… (læs mere)

Why has the function of my up & down arrow keys changed? Did I click something by accident? Help please?

(My new kitten *might* have stood on something on my keyboard - she's done that before & put Full Screen mode on, but I managed to fix that)

Normally, I scroll down a web page a bit at a time using the down arrow key on my laptop keyboard. Since yesterday, when I press the down arrow, the page jumps to the bottom (like pressing PageDown would do) and the up arrow jumps all the way back up.

How do I set it back so that it scrolls a bit whilst I press the key?

Stillet af Lancs for 6 år siden

Besvaret af philipp for 6 år siden

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How do I enable Javascript in Firefox 24.0? It suddenly became disabled.

Suddenly, I was unable to access Hotmail or another email account that uses Outlook. The message I received was: "JavaScript required to sign in. This web browser either … (læs mere)

Suddenly, I was unable to access Hotmail or another email account that uses Outlook. The message I received was: "JavaScript required to sign in. This web browser either does not support JavaScript, or scripts are being blocked."

1. Why would this spontaneously happen?

2. How do I fix it?

Stillet af Emalee for 6 år siden

Besvaret af cor-el for 6 år siden

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twitch tv is not working need help please

first i would like to say how cool firefox is and i have been sing chrome for so long but i neverlook back at it again. im using windows 10 microsoft edge updated to mozi… (læs mere)

first i would like to say how cool firefox is and i have been sing chrome for so long but i neverlook back at it again. im using windows 10 microsoft edge updated to mozilla firefox. all the video streaming like youtube etc but i dont know why twitch tv is not playing on firefox, i have been researching the web for solution but i dont know whats wrong please help me fix twitch tv and plsy the video stream using firefox.

thank you in advanced looking forward to your positive response.

Stillet af anjumiura for 4 år siden

Besvaret af FredMcD for 4 år siden

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After refreshing Firefox Beta 39.0, the browser will not open a website that opens in a new tab.

"SSL received a weak ephemeral Diffie-Hellman key in Server Key Exchange handshake message. (Error code: ssl_error_weak_server_ephemeral_dh_key) The page you are trying … (læs mere)

"SSL received a weak ephemeral Diffie-Hellman key in Server Key Exchange handshake message. (Error code: ssl_error_weak_server_ephemeral_dh_key)

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."

The page used to load in a new tab before I selected to Refresh Firefox. I cannot find out how to allow Firefox to open webpages in a new tab when selected from the tab in use.

Stillet af COKevin for 5 år siden

Besvaret af philipp for 5 år siden

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Firefox eating memory during regular browsing all the time

For the past several weeks I'm becoming increasingly aware of severe memory issues when using FF (currently FF30 32bit). No matter what I do, FF seems to keep allocating … (læs mere)

For the past several weeks I'm becoming increasingly aware of severe memory issues when using FF (currently FF30 32bit). No matter what I do, FF seems to keep allocating more memory to the point where it starts having severe issues and slowdowns, eventually crashing when the used memory reaches about 2.4GB, according to Windows Task manager (I'm running Win7 64 on 8GB of RAM). Currently, the whole process got so bad that it only takes several hours for FF to crash. I don't even have to use FF for this to happen - if I simply leave it running for two hours, when I come back, it's process is already using a few hundred MB of memory more.

I've tried disabling all of the add-ons. I've tried disabling all of the plugins, including Flash (which is always udated to latest version). I've tried the safe mode. I've even tried a clean profile. Nothing really changes much - some of my add-ons might have some influence on how fast FF eats the RAM and they certainly have visible impact on how much memory is used from the start, but even without any add-ons, the memory footprint of FF still gets bigger and bigger over time just by regular browsing.

I've also tried both installing FF28 with clean profile into clean directory - again, the same behaviour was observed, although it used less memory by default and its memory footprint was getting bigger slower than with FF30. I've also tried current nightlies (FF33a1), both 32bit and 64bit, again with a clean profile, installed into a separate new folder. Again, didn't really solve anything.

I also have a second separate Windows 8 install on my PC, so I've tried FF30 in this install as well, however, it behaves exactly the same. FF does this even under my Linux installation, so I really doubt it has something to do with my Win install.

Note that I've also tried running current Pale Moon, and while its allocated memory grows much slower than with FF, it still grows over time unexplicably, and as Pale Moon is based on FF code, I'd say this suggests there's some kind of issue there.

Also note that I usually have quite a few tabs open (around 50 is my average - and no, I don't want to use less tabs, before someone suggests that, I think any browser on current hardware should be able to handle 50 tabs without much issues, and pretty much any other browser is), but the same behaviour was observed even with under 10 tabs. I also always disable the delayed tab loading, meaning that all of my tabs load at browser startup, not just after I click on them, so my starting memory footprint with all of my tabs and add-ons is around 1.4GB (1.1 in Pale Moon), which probably means I'm seeing this issue manifest faster than many other would. I'm fine with the memory it eats at startup and with the slower startup. I would even be fine with my browser taking up 2 gigs of RAM (I've got 8GB of RAM for a reason), as long as it doesn't keep on allocating more and more memory without it ever going back down, even when I close several tabs.

Finally, it might be interesting to note that the memory measurements at about:memory grow much slower than the allocated memory reported by Task manager - meaning that quite often, FF memory measurement says it's using 1395MB RAM, while in Windows Taks manager, the Firefox32 process is reported as already taking up e.g. 1.8-2.0GB of RAM, and around 1500MB RAM in FF can equal to 2.2-2.4GB in Task Manager (meaning it's pretty close to FF crashing). And the "Free memory" buttons in about:memory seem to have no effect on the allocated memory, reported in Task manager (even though they do have some minor effect on used memory reported by FF itself there).

I don't really expect much help, I think I've already tried pretty much everything there was to try and for the time being it seems to me using Pale Moon is my only option right now, as in it the memory issues are at least somehow manageable and not as annoying as in classic FF, but I still thought I might post this here, if perhaps only for someone to take notice.

Stillet af Case_f for 6 år siden

Besvaret af guigs for 6 år siden

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Runtime Server Error in '/' Application and a 'create root file to fix' dunno how to do this.

For several weeks Firefox crashes when I close it down for the day. Firefox error message box sends crash report. Today I got I think from Firefox: please create a &… (læs mere)

For several weeks Firefox crashes when I close it down for the day. Firefox error message box sends crash report. Today I got I think from Firefox: please create a <customErrors> tag within a "web.config" configuration file located in the root directory of the current web application. This <customErrors> tag should then have its "mode" attribute set to "Off". <configuration>

   <system.web>
       <customErrors mode="Off"/>
   </system.web>

</configuration> Then there's a second file it says to add. Umm, where/how? The current error page you are seeing can be replaced by a custom error page by modifying the "defaultRedirect" attribute of the application's <customErrors> configuration tag to point to a custom error page URL. <configuration>

   <system.web>
       <customErrors mode="RemoteOnly" defaultRedirect="mycustompage.htm"/>
   </system.web>

</configuration> Okay, but under ProgramFiles>Firefox there are several folders and none of them say "root" so where am I to create said file and how do I get it there? And then what? I sure don't want to crash Firefox any more than it does as it at least still works.

Stillet af FranB7077 for 5 år siden

Besvaret af jscher2000 for 5 år siden

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Youtube is acting weird by showing full blank page OR just the video

The problem is that the homepage of "YouTube" is completely blank like so: https://i.imgur.com/M8f7Yn6.png . The browser I use by default is Firefox and it happens both i… (læs mere)

The problem is that the homepage of "YouTube" is completely blank like so: https://i.imgur.com/M8f7Yn6.png . The browser I use by default is Firefox and it happens both in incognito mode and normal browsing mode. If I use microsoft edge, Youtube loads fine, If i take a youtube video url from edge to firefox; the video will load up but nothing else: http://i.imgur.com/iOusiyA.png

Stillet af momoster69 for 2 år siden

Besvaret af FredMcD for 2 år siden