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Sometimes sites do not load on different tabs.

Dear guys, Last time we have issues with Firefox installed in our corporate network: sometimes we are not able to load sites on different tabs, a browser refuses to load … (tuilleadh eolais)

Dear guys,

Last time we have issues with Firefox installed in our corporate network:

sometimes we are not able to load sites on different tabs, a browser refuses to load them at all. Reload function doesn’t work also, but after closing and opening again the browser is able to load sites in a normal way. This issues is observed during a day with no visual reasons on different computers with different users.

OS information: Windows 10 Pro 21H1 19043.1110

Meanwhile Firefox installed on home computers of the same users has no issues, so we can assume that the problem is in firewall restrictions. Does anybody have the same issues? What we shall do to fix them?

Asked by senip1973 3 seachtaine ó shin

Last reply by FredMcD 3 seachtaine ó shin

Can you add the keyword 'firefox' to the User Agent of Ipad FireFox?

Hello I'm working at Imperva which is a security company. One of our product is Web Application Firewall. In this product one of our feature is to identify the applicatio… (tuilleadh eolais)

Hello I'm working at Imperva which is a security company. One of our product is Web Application Firewall. In this product one of our feature is to identify the application that is used when sending request to a web service. This may help our customer to set FireFox request as legit. One of the attribute that helps us doing it is the request header User Agent. We have found that FireFox which is installed on Ipad generate the following User Agent without the keyword 'firefox' (while Desktop FireFox and IPhone firefox does) Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1 Safari/605.1.15 (Note that this User Agent ) Because the User Agent is very similar to Macbook Safari application, we can't classify FireFox on Ipad.

Is there any reason why this is the implementation? Can you update the User Agent in the next version in order the security product will be classify it?

Avidan avidanr@imperva.com

Asked by avidanr 3 seachtaine ó shin

Last reply by JP 3 seachtaine ó shin

"Forced" FireFox Updates

Managing thousands of FIreFox Instances on Windows 10 systems across our enterprise. Need "Polices, Settings" to apply to firefox (GPO, Intune) to "force" updates for a… (tuilleadh eolais)

Managing thousands of FIreFox Instances on Windows 10 systems across our enterprise. Need "Polices, Settings" to apply to firefox (GPO, Intune) to "force" updates for all Firefox Versions to latest version and maintain latest version for instances as they are released. Currently, Firefox, Prompts end users if they want to update which is normaly dismissed and the instance remains outdated. In addition, Windows UAC prompts for elevation, which some users do not have rights or the user chooses to not allow. Either case Firefox does not update and remains outdated and vulnerable.

Chrome and Edge browsers all support regular "Forced" update cycles (weekly). Looking for similar service\polices for Firefox to ensure all systems are always running the latest Versions.

Asked by david.chichester 3 seachtaine ó shin

Last reply by david.chichester 3 seachtaine ó shin

Integrating a number of preferences for browsers when being upgraded

As I work towards rolling out FF91esr to 250 PCs, and having the UI almost usable, I need to be able to integrate a number of preferences to each browser. Does the group … (tuilleadh eolais)

As I work towards rolling out FF91esr to 250 PCs, and having the UI almost usable, I need to be able to integrate a number of preferences to each browser.

Does the group policy cover EVERY preference available?

I read on gHacks that Mozilla ripped out yet another feature - the ability to use the user.js preferences file. I must admit, I haven't confirmed this yet as I've only just finished reading it. I believe the user.js could not lock settings anyway?

I do have about 80-100 settings that I want to integrate. I can't simply replace their prefs.js because they will have undoubtedly set some preferences for themselves, which we do not forbid (yet).

So, without wiping out any preferences users may have set for themselves, how can I integrate the settings I need, assuming the GPO doesn't cover every conceivable preference?

disclaimer: Yes, I realize it is possible that some of the settings I'm going to integrate *might* conflict with preferences they've set for themselves. That will be dealt with internally by policy communications.

Asked by citizen1138x 3 seachtaine ó shin

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Your organization controls this browser

Hi, I have tried all day trying to get rid - of SaveFrom.net Helper - no luck. Latest Firefox running on latest Win.10. So frustrating, tried all sorts of tricks and noth… (tuilleadh eolais)

Hi, I have tried all day trying to get rid - of SaveFrom.net Helper - no luck. Latest Firefox running on latest Win.10. So frustrating, tried all sorts of tricks and nothing works Cheers,

GregT

Asked by gtcountry 1 mhí ó shin

Answered by gtcountry 1 mhí ó shin

how to set auto proxy for all users on Mac

I am wanting to deploy Firefox v90 on Mac at work. I need to have the proxy set as auto for all users as some of the machines are macbooks that are taken off site. In wi… (tuilleadh eolais)

I am wanting to deploy Firefox v90 on Mac at work. I need to have the proxy set as auto for all users as some of the machines are macbooks that are taken off site.

In windows you just need to edit the mozilla.cfg and set proxy type to 4

On the Mac there only seems to be a prefs.js in the user library

Something needs to be in the application content folder...

Asked by GerardKean 2 mhí ó shin

Firefox Browser update automatically as non administrator user and no user intervention

Hello. I work as Help desk support at a company (500+ AD users) and we all use Mozilla Browser (89.0.2 right now). in the past we used Windows XP and Mozilla latest ESR v… (tuilleadh eolais)

Hello. I work as Help desk support at a company (500+ AD users) and we all use Mozilla Browser (89.0.2 right now). in the past we used Windows XP and Mozilla latest ESR version, but we migrated recently to Windows 10 so we have to use the latest version of Firefox Browser. The problem that im facing now is that the maintenance service and Firefox update needs administrator privileges to update...and i just cant connect to all users and input the administrator password ... Is there a way to update automatically the Firefox Browser , without user intervention, something in regent or services or about:config ? (about config is already set to true for updates) All the users are in the domain and use AD files and folders on servers. i am aware of the risks of grading user the right to install...but we are well protected by the enterprise antivirus and multiple filters and firewalls...i just need a way to auto update the Firefox Browser to the latest version (90 i think)...and other versions to be released. Thank you.

Asked by Alex PDX 2 mhí ó shin

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  • Cartlannaithe

Profile migration FF Rapid Release 84.x to ESR 78.6.x (Offline)

Dear all, I am planning a move towards the Firefox ESR 78.6.x. Currently my customer is using the Firefox Rapid Release 84.x and need your help with the profile migration… (tuilleadh eolais)

Dear all,

I am planning a move towards the Firefox ESR 78.6.x. Currently my customer is using the Firefox Rapid Release 84.x and need your help with the profile migration. The customer has a very isolated on-premises environment and does not allow the users to login into a Firefox-Account. Therefore the settings for Cookies, Cache, History and especially Bookmarks are not synched.

Environment details:

  • Enterprise environment with several tausends of clients
  • All clients on Windows 10 Enterprise between 1809 and 20H2
  • All clients have always the newest Firefox installed currently 84.x

This creates a huge challenge to sync this stuff. Therefore I have now identified the following two options:

  1. 1 Allow the downgrade by using the environment variable MOZ_ALLOW_DOWNGRADE on Windows. For this option I am trying to find the real reason why this "Downgrade-Stop" has been implemented in the first place? What risks in detail do I take to allow this downgrade? Has anybody done this before and do you mind to share your experience here? How many issues did you face and how did you remediate the issues?
  1. 2 Hand over the migration to the users. Copy their current profile to their desktop and ask them to import their bookmarks manually. Not preferred by users and I can't even blame them for.

Is there any other way to automatically sync the profiles from 84.x to ESR 78.6.x without user interaction?

Thanks in advance Amir

Asked by LEnS Amir 8 mí ó shin

Answered by LEnS Amir 5 mhí ó shin

  • Cartlannaithe

Error "Firefox has stopped working" on install

A few weeks ago, Firefox stopped working on my machine. When I tried to launch it I got an error message "Firefox has stopped working". I tried a reinstall and a clean … (tuilleadh eolais)

A few weeks ago, Firefox stopped working on my machine. When I tried to launch it I got an error message "Firefox has stopped working". I tried a reinstall and a clean reinstall but both installation procedures fail with the same error.

I'm running Windows 10 64-bit. I am installing with administrative permissions.

There are two files in AppData\Roaming\Mozilla\Firefox\Crash Reports from the two days that I tried reinstalling. I'm not sure what to do with them.

  • InstallTime20201027185343 (from today)
  • InstallTime20201014125134 (from my last attempt, on 10/22)

Asked by jlefeaux 10 mí ó shin

Last reply by cor-el 10 mí ó shin

  • Cartlannaithe

problem authentication proxy

at work we use a proxy network with authentication ONLY with the firefox browser i have proxy problems. I see the page access denied by the proxy server, the only solutio… (tuilleadh eolais)

at work we use a proxy network with authentication ONLY with the firefox browser i have proxy problems. I see the page access denied by the proxy server, the only solution is to close and open the application.

Asked by marco26 1 bhliain ó shin

Last reply by gleb.bodrug99 1 bhliain ó shin

  • Cartlannaithe

Questions about Firefox software for corporate approval

With security concerns on the rise, our company has required that all software installed on their systems go through an approval process. As part of that approval process… (tuilleadh eolais)

With security concerns on the rise, our company has required that all software installed on their systems go through an approval process.

As part of that approval process, they want to know the following:

  • Is the software signed by a trusted third party?
  • Is the software downloaded from a US hosted facility?
  • Does the software perform call backs to the software maker?

Thank you!

Asked by mrmuffin10 1 bhliain ó shin

Last reply by Andrew 1 bhliain ó shin

  • Cartlannaithe

Firefox crashes

Hello experts, Hope you are all doing well. On a corporate Thinkpad T480 running Windows 10 Version 1803 OS Build 17134.1006 Firefox is crashing daily. Chrome or IE doesn… (tuilleadh eolais)

Hello experts,

Hope you are all doing well.

On a corporate Thinkpad T480 running Windows 10 Version 1803 OS Build 17134.1006 Firefox is crashing daily. Chrome or IE doesn't have the same problem. Troubleshooting performed so far: 1. Tried running Firefox for a full day in Safe Mode: Still crashes - bp-d9e945ed-e475-4b92-a449-e3b620191002 2. Tried ESR version of Firefox - no improvement. 3. Re-installed Firefox a few times - no improvement. 4. Chrome, IE, Edge do not have the same problem but they are not Firefox : ) 5. Reviewed the Firefox crashes knowledge base and tried everything listed there. Last test was to use Firefox for a day in Safe Mode (wasn't easy but I coped with it)

Something i've noticed (not 100% sure about it) is that if I leave a private window open the crash is somehow more likely to occur.

So far my observations are that this is some sort of a memory leak-like problem as just before the crash tabs on the browser and some content on pages becomes blank when I hover over with the mouse. Task Manager shows very high Memory usage 1,5-2 GBs.

Any and all advises are welcomed. Thank you!

Regards, Dimitar

Asked by dimitrof.dimitar 1 bhliain ó shin

Last reply by FredMcD 1 bhliain ó shin

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Couldn't load XPCOM error in non-persistent VDI

We use Firefox fairly extensively in our VDI environment and has become our organization's standard web browser. In a non-persistent VDI environment, on occasion we have … (tuilleadh eolais)

We use Firefox fairly extensively in our VDI environment and has become our organization's standard web browser. In a non-persistent VDI environment, on occasion we have users that experience the dreaded "Couldn't load XPCOM" popup error message. In my research this usually is attributed to a faulty/corrupt update. We are a VMware View shop using instant clones with what's called a "Writable Volume" which is, in essence, a file system filter that allows certain user data to be written to persistent storage and the rest is written to the non-persistent VM. Upon logout the persistent disk is detached and the non-persistent VM is removed/rebuilt.

We are using the ESR branch of Firefox with policies configured to disable automatic updating, so I'm not sure where Firefox is breaking. Is there anything I can do to assist? On top of this, it's more difficult to reproduce since I'm unable to causing it to error out myself.

Asked by mchadwickIT 2 bhliain ó shin

Last reply by FredMcD 2 bhliain ó shin

  • Cartlannaithe

google.com is not available when it is available on other browsers using same proxy.

Hello, I'm using version 60.7.2esr in an enterprise context behind a proxy. And I have the following issue : after some time using firefox, https://www.google.com becomes… (tuilleadh eolais)

Hello,

I'm using version 60.7.2esr in an enterprise context behind a proxy.

And I have the following issue : after some time using firefox, https://www.google.com becomes unreachable.

But this website is available from edge or chrome. All these other browsers are using the same enterprise proxy with the same configuration.

I checked the network tab : there is no even a header sent apparently, hinting there is an issue before even getting to send a header.

Hence I imagined it could be a firefox DNS cache issue.

I deactivated it by modifying the user.js as I cannot modify it in about:preferences user_pref("network.dns.disablePrefetch","true") user_pref("network.dnsCacheExpiration",0)

But that didn't change the issue.

Do you have any suggestion on how to find what is going on? or a possible culprit?

Asked by Pedro Cristian 2 bhliain ó shin

Last reply by FredMcD 2 bhliain ó shin

  • Cartlannaithe

Crashes at startup

I can't get any version of Firefox to launch. I've tried different install methods as well as both x32 and x64. When Firefox launches it crashes with the message below an… (tuilleadh eolais)

I can't get any version of Firefox to launch. I've tried different install methods as well as both x32 and x64. When Firefox launches it crashes with the message below and doesn't generate any messages in the windows event viewer.

"The application had a problem and crashed.

Unfortunately, the crash reporter is unable to submit a report for this crash.

Details: The application didn't leave an application data file."

Asked by simbiote4 2 bhliain ó shin

Last reply by simbiote4 2 bhliain ó shin

  • Cartlannaithe

Since Firefox 67.0.1, Google and some other websites can't be access if a proxy is performing HTTPS decryption

Firefox is showing this error : SEC_ERROR_REUSED_ISSUER_AND_SERIAL The proxy is performing https decryption based on a crafted rootCA that is distributed through GPO (Win… (tuilleadh eolais)

Firefox is showing this error : SEC_ERROR_REUSED_ISSUER_AND_SERIAL

The proxy is performing https decryption based on a crafted rootCA that is distributed through GPO (Windows AD environment.) and firerefox configured to trust enterprise roots CAs (security.enterprise_roots.enabled;true) All worked fine before Firefox 67.0.1 Now, some websites are still working but some are not, including Google and Mozilla's sites. Chrome is working fine with both of those websites. Proxy used is Trendicro Interscan Web security virtual appliance 6.5 sp2 fully patched.

Asked by jerinho 2 bhliain ó shin

Last reply by jerinho 2 bhliain ó shin

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Firefox 60.6.1ESR crashes on non-persistent VDI machines

On our non-persistent VDI environment we experiencing users where FireFox crashes frequently - We're running W7 Enterprise 32bits - Firefox version 60.6.1ESR 32 bits i wa… (tuilleadh eolais)

On our non-persistent VDI environment we experiencing users where FireFox crashes frequently - We're running W7 Enterprise 32bits - Firefox version 60.6.1ESR 32 bits

i was expecting Sophos to causing this issue, so i created a new VDI machine without Sophos installed. The same issue appered.

I can reproduce the issue when launching a radio station on http://www.onlineluisteren.nl/ Issue appears between the 5 minutes and 2 hours

Worknotes: - Launched firefox in safe mode - Turned off hardware acceleration - created a new VDI image without our anti-virus 'Sophos' - issue was also happening with Firefox 60.5.2ESR

Log reports: https://crash-stats.mozilla.com/report/index/8b0db8fe-fba8-4cfb-b621-c87740190507 - Without Sophos installed on the machine and running in safe mode - this is on a test machine

https://crash-stats.mozilla.com/report/index/94037459-040a-404a-a7f0-3aca70190507 - Without Sophos installed - this is on a test machine

https://crash-stats.mozilla.com/report/index/62aa7ab3-0adb-47b7-ab20-26de60190507 - Without Sophos installed - this is on a test machine

https://crash-stats.mozilla.com/report/index/c5770d27-a023-43da-aa2b-06f3a0190501 https://crash-stats.mozilla.com/report/index/30dae469-7400-49d8-b020-748760190501 https://crash-stats.mozilla.com/report/index/8ab54247-3add-431e-8176-6f4ef0190501#tab-metadata https://crash-stats.mozilla.com/report/index/04819f59-8ff6-4d9e-82f8-ea8910190501#tab-metadata - With Sophos installed - PROD machine

Asked by UserUnknown 2 bhliain ó shin

Answered by UserUnknown 2 bhliain ó shin

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Обновление не удалось, пожалуйста загрузите последнюю версию

Every day I download the latest version! Install it ! And in the next day the Firefox tell me that I must to download the new version ! Why my Firefox does not update au… (tuilleadh eolais)

Every day I download the latest version! Install it ! And in the next day the Firefox tell me that I must to download the new version ! Why my Firefox does not update automatically ????

Asked by dewon 2 bhliain ó shin

Last reply by cor-el 2 bhliain ó shin

  • Cartlannaithe

firefox crashes during startup

Windows 7 32-bit Enterprise running in a VMware workstation pro VM. Firefox has been working fine until I told it to go ahead and update last week. Since the update firef… (tuilleadh eolais)

Windows 7 32-bit Enterprise running in a VMware workstation pro VM. Firefox has been working fine until I told it to go ahead and update last week. Since the update firefox fails to start. I see the window border form and then disappear. No crash logs in Firefox crash dir. Uninstalled and re-installed (specifically chose 32-bit installer) and told it to reset everything (clean install). Still have problem. I do find this in event log. Images are also attached. The .dll mentioned has a different name every time and all virus/malware scans show clean both for the firefox installer and the system.


Faulting application name: firefox.exe, version: 65.0.0.6963, time stamp: 0x5c4a1021 Faulting module name: b_zhdcanxx.dll, version: 0.0.0.0, time stamp: 0x5c267ec8 Exception code: 0x406d1388 Fault offset: 0x0000845d Faulting process id: 0x1db8 Faulting application start time: 0x01d4c2469dd7dd4c Faulting application path: C:\Program Files\Mozilla Firefox\firefox.exe Faulting module path: C:\Windows\system32\b_zhdcanxx.dll Report Id: dd7d2077-2e39-11e9-a0a6-54c20d3b1e0f

- System

 - Provider 
  [ Name]  Application Error 

 - EventID 1000 
  [ Qualifiers]  0 

  Level 2 

  Task 100 

  Keywords 0x80000000000000 

 - TimeCreated 
  [ SystemTime]  2019-02-11T20:16:08.000000000Z 

  EventRecordID 120052 

  Channel Application 


  Security 

- EventData

  firefox.exe 
  65.0.0.6963 
  5c4a1021 
  b_zhdcanxx.dll 
  0.0.0.0 
  5c267ec8 
  406d1388 
  0000845d 
  1db8 
  01d4c2469dd7dd4c 
  C:\Program Files\Mozilla Firefox\firefox.exe 
  C:\Windows\system32\b_zhdcanxx.dll 
  dd7d2077-2e39-11e9-a0a6-54c20d3b1e0f

Asked by demianph 2 bhliain ó shin

Last reply by demianph 2 bhliain ó shin

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Can I use a Profile to deploy the same Firefox config to all users?

I manage a small office with a dozen users. We do an annual refresh of the PCs and so far I have manually managed configuring Firefox for each user. It takes a fair amou… (tuilleadh eolais)

I manage a small office with a dozen users. We do an annual refresh of the PCs and so far I have manually managed configuring Firefox for each user. It takes a fair amount of time.

I add about a half dozen extensions, configure search providers and reconfigure the main tool bar (add remove icons). I have a bookmarks.json file I import to all users and I did, at least in the older 52- versions set up the the default new tab with favorites (icons) to the most relevant business sites. I believe that I can re-config some of the "top sites" functionality in about:config. I change other things in the config (This started today as learning how to config for session cookies) and want ALL users to start off with identical config and lower my effort

The only exception (I can think of) would be I would want to export their passwords and restore them back.

Can I do all this with building a profile and importing it to each user? How can I start with a clean profile (refresh Firefox?) How well do profiles survive version upgrades? Users will all be different. Does this paly in?

What can i NOT get from this and what am I not asking?

Asked by RangerZ 3 bliana ó shin

Last reply by Shadow110 3 bliana ó shin