Sec_error_unknown_issuer Firefox Fix For Mac

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Help! My Firefox keeps crashing on Mac everytime I use it.
It is so annoying to close and reopen this browser every single time. How do I fix firefox keeps crashing Mac issue?

Ibm spss statistics v25 2 3 multilanguage for mac. Of course! Read this new post in detailed, you will find the easiest ways to fix firefox keeps crashing on Mac.

How Do I Fix Firefox from Crashing on Mac?

  • Let’s know ‘your connection is not secure Firefox how to solve methods’ it in the next section- Go To ‘Advanced’ Tab: If you click on ‘Advanced’, you get more information related to the connection.
  • Mozilla Firefox Error SECERRORUNKNOWNISSUER FIX TutorialOn websites which are supposed to be secure (the URL begins with 'Firefox must verif.

Users of Mozilla Firefox browser are confused when opening it but it closes or quits. So how to fix this Firefox crash Mac issue? Try these ways below:

  1. Update Firefox Browser
  2. Update Your Mac OS
  3. Update Plugins
  4. Update the Security Software
  5. Use Safe Mode
  6. Clean Install Firefox
  7. Check Hardware
  8. Report Crash Error

Article GuidePart 1. What Does Browser Crash Mean?Part 2. How Do I Fix Firefox from Crashing on Mac?Part 3. How to Solve Firefox Crashing on Startup Issue?Part 4. Prevent Firefox Problems with Browser Cleanup ToolPart 5. Conclusion


Part 1. What Does Browser Crash Mean?

A Browser Crash is an unexpected quitting or closing of a browser in the middle of any activity. Once a browser crashes, you can see a pop-up crash report box to let the developers know of what happened. We all experience crashing browsers at some point in our lives and it is fine. However, if the crashing happens most of the time, well this is a big problem already.

There are recent reports that the Mozilla Firefox browser is experiencing frequent crashing issues and users can no longer stand it. This is a terrible user experience. However, there are also possible solutions on how to fix firefox keeps crashing on Mac issues.

Part 2. How Do I Fix Firefox from Crashing on Mac?

When your Firefox keeps crashing constantly, don't panic! We will help you get over this issue and fix in no time. Here are some tips recommended by Mozilla in order to fix firefox crashes problems.

2.1 Update Firefox Browser

The crashing problem can also be caused by bugs on the current version that you are using. To fix this issue, try to check if there is an available update for your Firefox browser:

Mac
  1. Click the menu button.
  2. Click Help.
  3. Scroll down to About Firefox.
  4. Let Firefox check and scan for updates.
  5. Click Restart to Update Firefox.

The Firefox browser will restart in a while and it will load up using the updated version without the crashing anymore.

Note: Make sure you only download the latest firefox version from the official site to avoid malware infections.

2.2 Update your Mac OS

Your computer's operating system can also cause crashing on some web browsers. Follow these steps on how to update your computer's operating system:

  1. Go to AppStore.
  2. Click on Updates.
  3. Find Software Updates.
  4. Find Mac OS.
  5. Click Update and wait until Mac restarts.

2.3 Update Plugins

If you have already updated both the Firefox browser and the computer's OS and the firefox keeps crashing still, check maybe your plugins needed some upgrade in order to get rid of the issue. Check your installed plugin's website for their latest update and install it on your browser.

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2.4 Update Security Software

You internet security protection software can also interrupt your web browsing activity at random times and this can be so frustrating.

This might be a sign that your anti-virus software needs an update. To fix this, simply go your anti-virus' settings and check for the latest updates and follow the steps on how to install it.

2.5 Open Firefox in Safe Mode

To further determine if the problem is more than just crashing, try using Firefox on Safe mode and check whether it is still crashing or not. Here is how to open Firefox in safe mode:

  1. Go to the menu and click Help.
  2. Click Restart with Add-ons Disabled.
  3. Click SHIFT upon starting the Firefox browser to enter Safe mode.

2.6 Clean Install Firefox

If using the Safe mode does not fix firefox keeps crashing issue then why not try a clean install and check if it is still happening? Don't worry about your bookmarks, and other personal downloads, these files are stored and saved on a separate folder.

Uninstall Firefox

  1. Delete Firefox installation folders : (C:Program FilesMozilla Firefox and C:Program Files (x86)Mozilla Firefox).
  2. Download a new Firefox browser.
  3. Follow the installation process.

Once you have installed a fresh and clean browser, test to see if the crashing still occurs.

2.7 Report Crash Error

To better get a real fix on the Firefox keeps crashing issue, you can report it straight to the developers. All you need is to note down the crash ID.

Follow these steps on how to report crash incidents.

  1. Go to the Firefox location bar and enter about: crashes.
  2. Find Report ID and look for the latest crash and open it in a new tab (it will lead to crash-stats.mozilla.com).
  3. A message will appear 'Your report is being processed'.
  4. Wait until the process is finished.

2.8 Check Hardware

Although least among the suspects, your hardware can also interrupt the way the browsers act. If the RAM is out of space, it might cause certain crashing on any applications, software, and services that you are using on the device. You can use the Memtest86+ tool to diagnose your RAM.

Part 3. How to Solve Firefox Crashing on Startup Issue?

If your Firefox keeps crashing on startup, you tried it again and again but it still doesn't work, you might lose all your patience soon. Don't worry, because we have solutions recommended by Mozilla to help you get Firefox working again.

The first thing you need to do is to check if Firefox is on Safe Mode, just following the steps mentioned above of Open Firefox in Safe Mode in Part 2, then see if Firefox still crashing. If Firefox crashing happens in Safe Mode, then you need to clean install Firefox:

  1. Remove Firefox from your Mac.
  2. Delete installation folders of Firefox: (which located in C:Program FilesMozilla Firefox or C:Program Files (x86)Mozilla Firefox).
  3. Download a new version of the Firefox browser.
  4. Double-click on it and follow the installation process.

Last, Firefox crashing on startup may due to some malware or software. Just doing a deep scan on your Mac to find malware or software that causing the crash problem and remove them permanently.

Part 4. Prevent Firefox Problems with Browser Cleanup Tool

Now when all else fails, and you feel like you have done everything thing you could, we recommend to rely on a better solution like cleaners to prevent firefox keeps crashing problem.

iMyMac PowerMyMac is a safe and effective tool that automatically scans and detects any Junk Files to get rid of, diagnoses Mac status, cleans browsers, and many more.

To better prevent firefox not working on Mac problem, use Privacy by iMyMac PowerMyMac to resolve it as soon as possible:

  1. Download and Launch iMyMac PowerMyMac.
  2. Choose Privacy Option and Start Scan.
  3. Preview and Select Desired Browser Data to Clean.
  4. Wait for Browser Cleaning Finished.

Step 1. Download and Launch iMyMac PowerMyMac

Download iMyMac PowerMyMac on your computer and launch the program.

Step 2. Choose Privacy Option and Start Scan

Launch the program and find Privacy on the left side tools. Then click Scan.

Step 3. Preview and Select Desired Browser Data to Clean

Preview and delete browser cookies, caches, histories, and other necessary files that can cause crashing.

Step 4. Wait for Browser Cleaning Finished

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Click Clean and wait until all the process is completed

So easy, isn't it? It could help to prevent problems like FireFox's breakdown. PowerMyMac also helps you solve your Mac running slow or looking for duplicate photos issues or others, just have a free trial first!

Next time that you are experiencing browser crashing on your Mac, use Privacy for the fast and efficient result. No confusing methods, and reckless efforts.

Part 5. Conclusion

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There you have it, you have just learned how to fix firefox keeps crashing 2020 on your Mac. You will no longer get frustrated while surfing online. If your firefox tabs keep crashing, check out ways here to fix it. Have you already tried Privacy by iMyMac PowerMyMac so that you can make your Mac cleaned up? Share your comments below!

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Comment ()

Sily2018-11-28 10:16:05

How can I do when Firefox hangs? It says 'Not Responding', can you help me?

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iMyMac2018-11-28 11:04:06

Just follow the guide provided by Mozilla to help you solve Firefox hangs issue: https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding

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