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Firefox crashes and can't use the existing profile when relaunching

Over the past week I've had this error popup a few times when Firefox is launched: "You've launched an older version of Firefox. Using an older version of Firefox can cor… (மேலும் படிக்க)

Over the past week I've had this error popup a few times when Firefox is launched:

"You've launched an older version of Firefox. Using an older version of Firefox can corrupt bookmarks and browsing history already saved to an existing Firefox profile. To protect your information, create a new profile for this installation of Firefox."

I haven't yet spotted a pattern, but the most recent time it happened, I had the browser already open and either opened a new window or clicked Firefox in my start menu. The new window showed my homepage (blank tab) but was unresponsive: I couldn't type into the address bar, click a bookmark, or even close the window. The existing window was fine, so I closed that but had to kill Firefox in Task Manager.

When I relaunched Firefox, I got the above error message. Luckily I use Sync, so my many bookmarks are backed up. But of course all cookies have been deleted, so I have to login to websites again.

Firefox is up-to-date (84.0.1, 64-bit) and running on Windows 10 Enterprise. I even uninstalled, cleared out the data in AppData\Roaming\Mozilla (plus Local and LocalLow), and reinstalled.

As I said, this has happened a few times over the last week (3 or 4?) and is starting to get annoying now!

Any ideas? Thanks!

Asked by gbull 11 மாதங்களுக்கு முன்பு

Answered by gbull 9 மாதங்களுக்கு முன்பு

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On screen Keyboard not working.

On screen keyboard not working when using Firefox. It will work with MS Edge, but not Firefox. It flashes then disappears quickly when in Firefox. It worked previously… (மேலும் படிக்க)

On screen keyboard not working when using Firefox. It will work with MS Edge, but not Firefox. It flashes then disappears quickly when in Firefox. It worked previously, but a few months ago it quit working.

Asked by Ron 10 மாதங்களுக்கு முன்பு

Answered by alex_mayorga 10 மாதங்களுக்கு முன்பு

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After downloading and starting Firefox, I get an error message that says "A copy of Firefox is already open. only one copy of Firefox can be open at a time." The thing is I don't have another copy open.

After downloading and starting Firefox, I get an error message that says "A copy of Firefox is already open. only one copy of Firefox can be open at a time." The thing is… (மேலும் படிக்க)

After downloading and starting Firefox, I get an error message that says "A copy of Firefox is already open. only one copy of Firefox can be open at a time." The thing is I don't have another copy running.

Asked by krich377 1 வருடத்திற்கு முன்பு

Answered by jscher2000 1 வருடத்திற்கு முன்பு

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How to isolate one instance of FirefoxCP Web Content on my MacBook Pro

My MacBook Pro is running OS 11.0.1 and using Firefox 83.0. My battery runs down faster than it used to. Apple suggested checking the Activity monitor and I noticed sever… (மேலும் படிக்க)

My MacBook Pro is running OS 11.0.1 and using Firefox 83.0. My battery runs down faster than it used to. Apple suggested checking the Activity monitor and I noticed several instances of FirefoxCP Web Content. I have lots of tabs open. Most of them are using <1% of CPU, but one is about 50%. Is there any way to figure out what that is other than shutting down the tabs one at a time and watching the Activity Monitor?

Asked by jerryalevin 11 மாதங்களுக்கு முன்பு

Answered by TyDraniu 11 மாதங்களுக்கு முன்பு

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Fire Fox is really slow to start

Hello my number 1 browser community. I have a problem with fire fox starting super slow. I use firefox nightly(i love it!) but i tried all the stuff in the solutions area… (மேலும் படிக்க)

Hello my number 1 browser community. I have a problem with fire fox starting super slow. I use firefox nightly(i love it!) but i tried all the stuff in the solutions area for fixing slow start up but none of them help. I always use only 2 add ons and they are the same add ons i have been using for years. i have had this problem for like almost 2 years and i dont know what to do. i tried re-installing, refreshing, clearing cache, safe mode but nothing fixes it. The 2 add ons i use is ublock origin and https everywhere, please help me guys cause sometimes it takes up to even 4 mins for firefox to start.

Asked by miggz 8 மாதங்களுக்கு முன்பு

Answered by ·´¯`·...¸>-)))º> ~dbben 8 மாதங்களுக்கு முன்பு

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Update on/about 21 April 2021 broke WidevineCDM for many users, breaking Netflix/Spotify/etc. (thread of threads)

Each of the threads below is someone reporting the same problem (which I also have), with the same timing. Suddenly on 21 April 2021 all (?) major streaming sites started… (மேலும் படிக்க)

Each of the threads below is someone reporting the same problem (which I also have), with the same timing. Suddenly on 21 April 2021 all (?) major streaming sites started to give "The WidevineCDM plugin has crashed" message and ceased to work .

https://support.mozilla.org/en-US/questions/1333289 https://support.mozilla.org/en-US/questions/1333332 https://support.mozilla.org/en-US/questions/1333503 https://support.mozilla.org/en-US/questions/1333613 https://support.mozilla.org/en-US/questions/1333506 https://support.mozilla.org/en-US/questions/1333571

No suggested fix works. Reinstalling does not help, toggling DRM application does not help. It was obviously the update (at least for users on 78.10.0esr with OS X 10.9.5) that did it. Is there some way to get this registered as a bug?

Asked by pauls.filter 7 மாதங்களுக்கு முன்பு

Last reply by cor-el 5 மாதங்களுக்கு முன்பு

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streaming problems

hello. I currently have a problem not being able to stream films on netflix, amazon prime, disney plus using firefox browser. This issue happened overnight. Depending on … (மேலும் படிக்க)

hello.

I currently have a problem not being able to stream films on netflix, amazon prime, disney plus using firefox browser. This issue happened overnight. Depending on the site a certain error code message will pop up then the same yellow bar at the top says "the widevineCdm plugin has crashed..." i have reloaded the page, sent the report. uninstalled and installed firefox...but the issue continues. This happened roughtly 2 weeks ago and the problem hasnt resolved itself. Safari allows me to stream most sites barr disney plus. Can anyone help. I've tried many of the things google has suggested and it hasnt fixed the problem. I have tried chrome also, there seems to be the same issue. does anyone have suggestions

Asked by eshy_g 6 மாதங்களுக்கு முன்பு

Answered by cor-el 6 மாதங்களுக்கு முன்பு

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Characters disappear from text on page

I've been having this problem recently (firefox build 82.0.3 and a few older versions) where characters randomly disappear from the text being displayed. In addition to w… (மேலும் படிக்க)

I've been having this problem recently (firefox build 82.0.3 and a few older versions) where characters randomly disappear from the text being displayed. In addition to webpage body text, the address bar and tab titles also disappear sometimes.

As I'm typing this text characters are randomly being replaced with blank spaces. Firefox is the only application on my computer that seems to have this problem. I have restarted it, reset the user profile, and disable all extensions/add-ons in an attempt to debug but it hasn't seemed to help.

Attached are two screen captures, one where the text has disappeared on me and one after I highlighted the text to bring it back. Note: the address bar and tab titles are blank in both since I didn't highlight/click on them.

Asked by ALongtimeFirefoxUser 1 வருடத்திற்கு முன்பு

Answered by cor-el 1 வருடத்திற்கு முன்பு

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error: menuitem id=spell-no-suggestion

My colleague can't bring exe and wish to know how to get a solution. and step that be shared will be appreciable.,

Asked by khurramarif 11 மாதங்களுக்கு முன்பு

Answered by khurramarif 11 மாதங்களுக்கு முன்பு

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Wordpress Website not (re-)loading in Firefox

Hi @ all, our website https://ana-dismissed.de/ is not loading in Firefox, or to be more precise it is loading often but on occasionally not reloading when refreshed. Thi… (மேலும் படிக்க)

Hi @ all,

our website https://ana-dismissed.de/ is not loading in Firefox, or to be more precise it is loading often but on occasionally not reloading when refreshed. This only happens in Firefox, Safari and other Chrome-based Browsers don't show this, perfectly working there (as far as I could check).

I already checked Firefox developer tools, like console or resource loadings etc. There is no issue I can find. I'm completely lost, no hint at all, why this happens in Firefox only.

Please find a short video here: https://imgur.com/a/31XyiMi

I'm thankful for every hint into the right direction.

Best regards!

Asked by admin340 10 மாதங்களுக்கு முன்பு

Answered by jscher2000 10 மாதங்களுக்கு முன்பு

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Video playback "Video can't be played because the file is corrupt" despite the file being perfectly fine.

So I've noticed how some video files are able to be played back in Firefox. Some are not able to what so ever, for example I've created a text video using this FFPMEG com… (மேலும் படிக்க)

So I've noticed how some video files are able to be played back in Firefox. Some are not able to what so ever, for example I've created a text video using this FFPMEG command: ffmpeg -f lavfi -i testsrc=duration=10:size=1280x720:rate=30 testsrc.mp4

which created the following file: https://astolfo.nl/i/z2ada.mp4 Both the uploaded version and the local .mp4 are unable to be played back in Firefox. However opening them up in edge chromium both files play back perfectly. Besides Edge I've also confirmed it plays back nicely in MPV.

I've tried Hardware acceleration, but both having it on and off did not change the fact that these files wouldn't want to playback in Firefox. Safe mode also did not effect this issue.

Asked by dapal003 11 மாதங்களுக்கு முன்பு

Answered by jscher2000 11 மாதங்களுக்கு முன்பு

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Drop down lists not working

Recently I have noticed that where there are drop down lists on websites I visit the drop down function no longer works properly if I am using the Firefox browser. If I c… (மேலும் படிக்க)

Recently I have noticed that where there are drop down lists on websites I visit the drop down function no longer works properly if I am using the Firefox browser. If I click on the arrow in a drop down list box the list briefly appears then disappears almost immediately making impossible to select an option from that list. I don't have this problem if I use any other browser like Safari and the drop down list function used to work on Firefox, so presumably this is a bug unless there is something in preferences that needs changing. I am using v88.0.1 on mac OS Sierra 10.12.6. Any help wud be appreciated

Asked by gary.mitchell 6 மாதங்களுக்கு முன்பு

Answered by FredMcD 6 மாதங்களுக்கு முன்பு

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Firefox keep redirecting localhost to www or www.localhost:8000

Hi, I'm using Firefox 85.0.2(64-bit) Windows 10 While I'm testing local testing for website, whenever I typed/entered localhost OR localhost:8000 Firefox keep redirecting… (மேலும் படிக்க)

Hi, I'm using Firefox 85.0.2(64-bit) Windows 10

While I'm testing local testing for website, whenever I typed/entered localhost OR localhost:8000 Firefox keep redirecting/guesing subdomain for it(which="www"). Made my testing messed up.

There's same issue on https://support.mozilla.org/en-US/questions/1216065 None of those work.

set: browser.fixup.alternate.enabled to false or Connection Settings with No proxy

Please, stop. Chrome and Edge behave normally. This site need darkmode :/

Asked by prothegee 9 மாதங்களுக்கு முன்பு

Answered by prothegee 9 மாதங்களுக்கு முன்பு

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my Firefox has been hijacked by Bing

Firefox is default browser, suddenly Bing is replacing it and can't get firefox shortcut to work. It automatically goes to Bing

Asked by dunnepatti 1 வருடத்திற்கு முன்பு

Answered by savmort 1 வருடத்திற்கு முன்பு

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glitchy graphics and text

Hi all For a while now I've had a problem in Firefox where images randomly show up with green blocky glitches or yellow lines on them. Also sometimes text does not show c… (மேலும் படிக்க)

Hi all

For a while now I've had a problem in Firefox where images randomly show up with green blocky glitches or yellow lines on them. Also sometimes text does not show correctly. I've attached a couple of examples. The image is from my Facebook feed (but it can happen on any website it seems) and the text is open tabs - the one on the right is this page.

Any suggestions? I've refreshed the Firefox install, and have only one add-on - an ad blocker. I've tried two different ad-blocking add-ons and the problem persists with both.

Thanks

Asked by hooseyfloot 8 மாதங்களுக்கு முன்பு

Answered by cor-el 8 மாதங்களுக்கு முன்பு

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MQTT (wss) Not Connecting in Firefox, Works in Other Browsers

I have a website that uses live data from an MQTT server. The server has proper certs, and works fine with Chrome, Opera, Edge on various platforms (mobile, Windows, Linu… (மேலும் படிக்க)

I have a website that uses live data from an MQTT server. The server has proper certs, and works fine with Chrome, Opera, Edge on various platforms (mobile, Windows, Linux). The live data does not display in Firefox and has not in several months/FF builds.

The console shows The connection to wss://weather.ghammer.net:9001/mqtt was interrupted while the page was loading.

No further info is available. In order to continue to use and recommend Firefox, this needs to work as in other browsers.

Any ideas?

Asked by GHammer 9 மாதங்களுக்கு முன்பு

Answered by jscher2000 9 மாதங்களுக்கு முன்பு

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VCRUNTIME140_1.dll not found

Following a Windows 10 update, I tried to open Firefox and the following popup message appeared. "the code execution cannot proceed because VCRUNTIME140_1.dll was not fou… (மேலும் படிக்க)

Following a Windows 10 update, I tried to open Firefox and the following popup message appeared. "the code execution cannot proceed because VCRUNTIME140_1.dll was not found. Reinstalling the program may fix this problem." I have tried several times to download the latest version of Firefox, but during it's installation the same error message appears. How can I fix this problem and get Firefox to work normally.

Asked by dkirk1 5 மாதங்களுக்கு முன்பு

Answered by FredMcD 5 மாதங்களுக்கு முன்பு

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Not loading any pages and cant can't open settings

Yesterday I was using Firefox normally (browsing, Discord, etc.). Today when I opened it, it wouldn't load any page. If I type something in the adress bar it will auto-co… (மேலும் படிக்க)

Yesterday I was using Firefox normally (browsing, Discord, etc.). Today when I opened it, it wouldn't load any page. If I type something in the adress bar it will auto-complete or show suggestions based on google, but when I hit enter, nothing happens. It doesn't even try to load anything. I also can't go into options. When I click on the options button, nothing happens. I am not running in any compatibility modes. I have tried reinstalling Firefox, didn't help. I am not using any add-ons. I have done several virus searches. Other browsers work fine. I'm running out of ideas now, that's why I'm doing this post.

Asked by blockbuster2033 8 மாதங்களுக்கு முன்பு

Answered by blockbuster2033 8 மாதங்களுக்கு முன்பு

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Address Bar Search Not Working

Hi, Firefox 84.0.1 (64-bit) on Linux Mint 18.3 I have the 'Use the address bar for search and navigation' option selected in settings but when I enter a search all I get … (மேலும் படிக்க)

Hi,

Firefox 84.0.1 (64-bit) on Linux Mint 18.3

I have the 'Use the address bar for search and navigation' option selected in settings but when I enter a search all I get is 'Hmm. That address doesn’t look right. Please check that the URL is correct and try again.'

Any ideas please?

Asked by caned_monkey 10 மாதங்களுக்கு முன்பு

Answered by jscher2000 10 மாதங்களுக்கு முன்பு

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Firefox loads but doesn't function MSVCP140.dll incompatible with windows

I got this message C:\WINDOWS\SYSTEM32\MSVCP140.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original… (மேலும் படிக்க)

I got this message

C:\WINDOWS\SYSTEM32\MSVCP140.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support. Error status 0xc000012f.

and firefox would either not load, and after I reinstalled it it would load but not load web pages. I refreshed firefox, uninstalled and reinstalled. Nothing so far. Even after a fresh install nothing.

Asked by buckinghamjordan 7 மாதங்களுக்கு முன்பு

Answered by buckinghamjordan 7 மாதங்களுக்கு முன்பு