Ever since Firefox updated to 17.0.1, the flash and silverlight plugins just disappeared. I tried to clean installing the flash player, it did not work. I tried clean installing an earlier version of flash player, that did not work either. The plugin manager is less than useless as it says the plugin has been successfully installed yet I cannot use Netflix nor any flash video. I did all of the above once again with all plugins and addons disabled, and still nothing happened.
I am using Windows 7 64bit Ultimate and for some reason I had a problem that I have seen many people on here was having and was blaming Firefox's Plugin Container when watching Netflix or anything using Microsoft's Silverlight. But it isn't the Container that is causing the "Silverlight Plugin Has Crashed" problem. I just talked to Microsoft about it and found the solution on fixing it. The problem is the Computer Browser.
My Ubuntu version is 16.04 LTS. How to enable flash player in Mozilla Firefox in Ubuntu is a helpful article. If there is not a directory named lib64, just copy the correct file to /usr/lib/firefox/browser/plugins/. Based on my experience, it also works well.
Thanks Fiz, Your reply led me to further research my problem. In addition to Shockwave Flash that you mentioned, I also have: "OpenH264 Codec provided by Cisco Systems, Inc." and "Widevine Content Decryption Module provided by Google Inc". I found a good explanation of them detailed at: -US/questions/1128690.
Hi Technomed. I've included a screenshot of the plug-in(s) you have running on your system that Firefox is using. To my knowledge, Firefox does not come pre-loaded with any plugins or extensions. I would recommend you consider troubleshooting extensions/add-ons, as they are just as likely, if not more likely, to be the cause of your issue(s). I've provided a link below that can help you identify problematic extensions/add-ons. I hope this has helped.
original version of firefox I downloaded a few days ago seemed to work fine, after firefox updated, I haven't been able to access my amcrest 841 cameras because it keeps asking to download and install plug in. Tried doing this numerous days and after numerous reboots. The current version of firefox is 56.0 (32-bit) Don't know what version I had before it upgraded itself.
If you still want to downgrade, look under;I still want to downgrade. Click the Directory of other versions and languages link.Look for the directory of the version that you want.But, remember that old versions may have security issues.
Ok, thanks FredMcD. I went to the link you suggested on ESR and I tried the 64 bit version first but that did not solve the problem (I have 64 bit machine) so I tried the 32 bit version 52.4.0 and that is now working as I write this. Thanks Fred, I'm glad there's someone out there that can straighten out these messes. I recently changed to firefox as default browser and seem to work fine until the last upgrade. Chrome and IE worked fine. I guess I should have followed by belief in "if it ain't broke, don't fix it". I understand companies trying to keep things secure but maybe they should test the upgrades better before they unleash it and cause thousands of people trouble. Thanks again, I've been trying to get firefox to work again for a couple of weeks.
Confirmed that I can do the same and they come back. They are obviously being background loaded/enabled by Firefox itself when you launch it; so that they would be instantly available if you selected them in Firefox. I'm not sure how to stop that, there is probably something in Firefox 'About:Config' that would do it.....
According to the Firefox Support article Add or Remove a Search Engine in Firefox, search engines that are removed from the list of available search engines at Tools Options One-Click Search Engines with the Remove button can be added back by clicking the Restore Default Search Engines button, so that implies they aren't permanently deleted from the user's default Firefox profile by design. However, I'd still expect search engines that were hidden or removed in the Firefox settings to be shown as Disabled in CCleaner at Tools Browser Plugins Firefox.
If the behaviour GeorgeNelis noticed with CCleaner v5.72 is caused by a bug then the problem must have started before CCleaner v5.72 was released since I see the same thing with the previous CCleaner v 5.71 (rel. 14-Sep-2020) and the latest Firefox v81.0 browser. My Amazon.ca and eBay search engines are always hidden / disabled (i.e., the check mark is toggled OFF) in my Firefox browser at Tools Options Search One-Click Search Engines as shown below (note that GeorgeNelis might have gone one step further and actually used the Remove button to remove DuckDuckGo and Bing from their list of available search engines) ...
...but when I go Tools Browser Plugins Firefox in CCleaner v5.71 the Amazon and eBay search engines are both listed as Enabled. I also have no idea why CCleaner lists my Amazon search engine for their Australian site at Amazon.com.au when it's listed as Amazon.ca (I live in Canada) in my Firefox browser.
'Removing' a search engine from the One-Click list doesn't disable the search engine, it just 'removes' if from that list and stops it being displayed on the search bar dropdown.
The 'removed' search engine is still loaded and enabled, but you can't see it on either list.
To remove alternative search engines you don't want to be displayed in the search bar or address bar, remove the check mark next to the search engine listed in the Search panel under One-click Search Engines. This will not remove the search engines themselves.
Then that sounds like the CCleaner browser add-on manager for at Tools Browser Plugins Firefox isn't working as expected if the changes made in CCleaner to enable/disable Firefox browser add-ons aren't permanent. Doesn't that qualify as a bug?
I did some more testing and it's not just the one-click search engines in Firefox that are a problem. I disabled my Bitdefender TrafficLight for Firefox extension from within CCleaner v5.71 at Tools Browser Plugins Firefox (my image shows CCleaner detects the Publisher as BitDefender Labs) and CCleaner initially disabled this extension in Firefox, but the when I closed and relaunched Firefox a second time the Bitdefender TrafficLight extension automatically re-enabled itself. CCleaner v5.71 is still reporting that that Bitdefender TrafficLight is disabled even though I can see it's re-enabled in Firefox.
(This particular issue is nothing to do with syncing, but it is similar to the syncing issue with browsers.
If you have your browser synced then you can clean synced browser data off your machine with CCleaner and it's gone from your machine; but the browser will sync it back again as soon as you open the browser - So that cleaning of synced data is also pointless).
(PS. I believe that I have found the json file that is controlling that automatic search engine/other extension launching in Firefox but want to look at things a bit more before playing about with it).
I disabled my Bitdefender TrafficLight for Firefox extension from within CCleaner v5.71 at Tools Browser Plugins Firefox (my image shows CCleaner detects the Publisher as BitDefender Labs) and CCleaner initially disabled this extension in Firefox, but the when I closed and relaunched Firefox a second time the Bitdefender TrafficLight extension automatically re-enabled itself. ..
Not really a bug - CCleaner is doing what is is expected to do and disabling the extensions - but Firefox is then re-enabling them again as soon as you launch Firefox. So it's more of a pointless excercise disabling the 'special' Firefox extensions, rather than being a bug. It wouldn't matter how, or what, you used to disable them, Firefox will always put them back/re-enable them....
If I disable my Bitdefender TrafficLight for Firefox extension from my CCleaner add-on manager (Tools Browser Plugins Firefox, highlight the extension and click the Disable button) the extension re-enables itself after a second re-start of the browser (i.e., the icon reappears in my browser toolbar and the extension is fully functional). There's nothing "special" about this extension - it's just a typical browser add-on downloaded from the Mozilla AMO store at -US/firefox/extensions/.
If I disable my Bitdefender TrafficLight for Firefox extension from my Firefox add-on manager (Tools Add-ons Extensions ) as shown below the extension remains disabled through multiple re-boots (i.e., the icon disappears from my browser toolbar until I re-enable it in the Firefox add-on manager).
I managed to delete some unwanted features (such as autoform) via the Mozilla installation folder in myprograms but could not find anything relevant to the search engines list - unless I missed something.
I look this up also only to find the same old standard results / replies on how to remove the default search engines from the list - I know that - but they still exist and are always displayed in CCleaner even when I have 'deleted' them in FF - they are never truly deleted as you can restore them at any time, it seems they are 'embedded' with firefox somehow.
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