I like using Firefox, one of the most popular web browsers, developed by Mozilla, a non-profit organization. The Mozilla team has been upgrading the browser by adding many great features, making the product more powerful and easy-to-use. However, performance issues are constantly reported by users.
Today we want to highlight the most common Firefox problems and provide you with simple fixes that anyone can use to get Firefox back to its best.
Step by Step Instructions to Fix Mozilla Firefox Running Slow or Freezing Issues
- If Firefox becomes totally unresponsive, force quit the application. If it turns out that your Mac is frozen, you’ll probably have to do a hard reboot by pressing the power button — holding it for three seconds or so. Then press it again to restart your computer.
- Open Firefox browser and check the version. Click the Firefox icon and you’ll see “About Firefox”. Click on it and a window will pop up showing the version. If it’s not up to date, update to the latest one.
- Unload burdens from the browser. You can do so by:
- Clearing browsing history
- Removing useless extensions
- Disabling unneeded plugins
- Clean your Mac hard drive. You can do this manually, or save time by using a cleaning app like IObit MacBooster (alternative CleanMyMac 3). This helps tune up your overall Mac performance, thus making apps like Firefox run smoothly.
- Have good web browsing habits:
- Always try to open only one window, and close tabs you don’t need, especially when you finish reading content in big magazine sites like Forbes, Huffington Post, MacWorld, etc. which I view as heavy sites because they usually load tons of flash ads automatically.
- Avoid multitasking. When you are using Firefox, close as many other apps as possible in order to squeeze more system resources (CPU, RAM) for Firefox.
- If Firefox is still running slow or freezing randomly, switch to Safari or Chrome. Sometimes Firefox just doesn’t work well under certain versions of OS X, for example El Capitan. Many Mac users have observed the issue — see evidence from this Apple community thread.
Step by Step Instructions to Fix Mozilla Firefox Crashing Issue
Foxes are elegant and agile creatures, which is to say that when there is an obstacle, they should evade it smoothly, not crash into the thing.
When Firefox doesn’t load or crashes, this makes us incredibly sad. Thankfully, we have some solutions to get Firefox back on its feet.
Identify problematic Firefox add-ons
- In a terrible murder mystery, the cliché is that “the butler did it.” Well, when Firefox is crashing regularly, it’s tempting to say “the add-on did it.”
- Plugins and extensions add so much to our browser experience, but they are also a common cause of problems. To start with, make sure each extension and plugin is up-to-date. Firefox even has an official plugin checker.
- If everything checks out but Firefox keeps crashing, we recommend running it in Safe Mode. This will load Firefox without any add-ons.
To start Firefox in Safe Mode:
- Click the Firefox menu button
- Click Help
- Select Restart with Add-ons Disabled
You can also launch Firefox while holding the Shift key to start in Safe Mode.
If the crashes go away in Firefox Safe Mode, then you know the butler add-on did it. So we know that an add-on is causing the crashes, now what? You should disable all your ad-ons and turn them back on one at a time. This way you can methodically find the guilty add-on.
To manage your Firefox add-ons follow these steps:
- Click the Firefox menu button
- Select Add-ons > Extensions or Appearance
- Disable or enable as you like
- Restart Firefox
Step by Step Instructions to Fix Mozilla Firefox Crashes on Startup
Uh-oh. Firefox won’t even start? Don’t worry; it may seem like “the worst thing that could have ever happened to anyone” but the solution is often easier than you’d expect. Begin by holding the Shift key when launching Firefox to start in Safe Mode.
If this works then chances are you have a dodgy extension. Follow the steps from Identify problematic Firefox add-ons. However, if Safe Mode isn’t working either, you’re going to have to uninstall and reinstall Firefox.
To manually reinstall Mozilla Firefox:
- Make sure the application is closed
- Drag the application to your Trash
- Empty your Trash
- Download the latest version of Firefox for Mac
- Install Firefox
This will repair Firefox will keeping your profile including bookmarks and settings. An easier and safer option is to use CleanMyMac’s Uninstaller to repair Firefox with a reset:
- Launch CleanMyMac and click on Uninstaller
- Click on Mozilla Firefox
- Click on Application Reset at the top
Step by Step Instructions to Fix Mozilla Firefox not Loading Pages
You had one job, Firefox! When web pages don’t open, it’s more than a little annoying, considering that’s the main task of a browser. But let’s not jump to conclusions, maybe Firefox isn’t to blame.
The first step is to open a new tab and try other sites. If they aren’t loading either, the second step would be to try another browser like Safari and see if the web pages load there.
If they do then the problem is with Firefox. Let’s Firefix it!
If you’re using a proxy server to browse the web, it could be the problem that’s stopping Firefox from loading pages. It’s easy to check, simply follow these steps:
- Click on the Firefox menu
- Navigate to Options > Advanced > Network
- Click on Settings under Connection
- Select No Proxy
- Close options and reload web pages
Clear cookies and cache
In Clean up Firefox (and your MacOS) we covered how to clear your cache and once again it could be the solution to your Firefox problem. Also, this time we suggest also cleaning Cookies, whether using the manual methods or the easier CleanMyMac methods.
Note: We hope these steps have helped you to speed up Mozilla Firefox performance a bit. If you have any questions about the process, let us know by leaving a comment below or you may call on toll free number