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Some websites don't work properly on Firefox so I have to go to Chrome

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I've noticed that at times Firefox won't work and I have to go to Chrome for full functionality. I wanted to go to the visa section for the Australian government. Firefox simply wouldn't load the page.

I needed help logging into my Microsoft office365 account, but Microsoft support couldn't log into my computer. In both instances, using Chrome was the solution. I've seen this at other web sites, so if the page won't load or anything else, I go to Chrome. I'd rather stick with Firefox, but it's looking like I'm forced to switch. What's going on?

I've noticed that at times Firefox won't work and I have to go to Chrome for full functionality. I wanted to go to the visa section for the Australian government. Firefox simply wouldn't load the page. I needed help logging into my Microsoft office365 account, but Microsoft support couldn't log into my computer. In both instances, using Chrome was the solution. I've seen this at other web sites, so if the page won't load or anything else, I go to Chrome. I'd rather stick with Firefox, but it's looking like I'm forced to switch. What's going on?

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It varies... some sites use features or interfaces that do not exist in Firefox or only exist in Firefox if you go into about:config and enable the feature. In other cases, it is our quest for privacy that does us in.

If a site is generally known to work in Firefox, these are standard suggestions to try when it stops working normally:

Double-check content blockers: Firefox's Tracking Protection feature, and extensions that counter ads and tracking, may break websites that embed third party content (meaning, from a secondary server).

(A) The shield icon toward the left end of the address bar usually turns a bit purplish when content is blocked. Click the icon to learn more or make an exception. See: Enhanced Tracking Protection in Firefox for desktop.

(B) Extensions such as Adblock Plus, Blur, Disconnect, DuckDuckGo Privacy Essentials, Ghostery, NoScript, Privacy Badger, uBlock Origin or uMatrix usually provide a toolbar button to manage blocked content in a page. There may or may not be a number on the icon indicating the number of blocked items; you sometimes need to click the button to see what's going on and test whether you need to make an exception for this site.

Cookie/Storage Restrictions: This article has general guidance on this issue: Websites say cookies are blocked - Unblock them

Cache and Cookies: When you have a problem with one particular site that was working in Firefox previously, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site.

(1) Clear Firefox's Cache

See: How to clear the Firefox cache

If you have a large hard drive, this might take a few minutes.

(2) Remove the site's cookies (save any pending work first). While viewing a page on the site, click the lock icon at the left end of the address bar. After a moment, a "Clear Cookies and Site Data" button should appear at the bottom. Go ahead and click that.

In the dialog that opens, you will see one or more matches to the current address so you can remove the site's cookies individually without affecting other sites.

Then try reloading the page. Does that help?

Testing in Firefox's Safe/Troubleshoot Mode: In this mode, Firefox temporarily deactivates extensions, hardware acceleration, any userChrome.css/userContent.css files, and some other advanced features to help you assess whether these are causing the problem.

If Firefox is running:

You can restart Firefox in Safe/Troubleshoot Mode using either:

  • "3-bar" menu button > Help > Troubleshoot Mode... (before Fx88: Restart with Add-ons Disabled)
  • (menu bar) Help menu > Troubleshoot Mode... (before Fx88: Restart with Add-ons Disabled)

and OK the restart. A small dialog should appear. Click the Open button (before Fx88: "Start in Safe Mode" button).

If Firefox is not running:

Hold down the Shift key when starting Firefox. (On Mac, hold down the option/alt key instead of the Shift key.) A small dialog should appear. Click the Open button (before Fx88: "Start in Safe Mode" button).

Note: Don't use the Refresh without first reviewing this article to understand what will be deleted: Refresh Firefox - reset add-ons and settings.

Any improvement?