How do I get a software removal tools on firefox

I have a virus attacking my home screen

Is this problem on a desktop computer running Windows, MacOS, or Linux? I haven't heard of this kind of thing on an Android device...
I'm going to assume '''Windows'''. Here's my suggested procedure for tracking down and cleaning out bad add-ons, which are the most likely culprit. Sorry for the length -- it's not as bad as it looks:
(1) Open the Windows '''Control Panel''', Uninstall a Program. After the list loads, click the "Installed on" column heading to group the infections, I mean, additions, by date. This can help in smoking out undisclosed bundle items that snuck in with some software you agreed to install, as well as innocent-sounding programs with misleading names. Take out as much trash as possible here.
(2) Open Firefox's '''Add-ons page''' using either:
* Ctrl+Shift+a
* "3-bar" menu button (or Tools menu) > Add-ons
In the left column, click '''Plugins'''. Set nonessential and unrecognized plugins to "Never Activate".
In the left column, click '''Extensions'''. Then, if in doubt, disable (or Remove, if possible) unrecognized and unwanted extensions.
Often a link will appear above at least one disabled extension to restart Firefox. You can complete your work on the tab and click one of the links as the last step.
Any improvement?
(3) You can search for remaining issues with the '''scanning/cleaning tools''' listed in our support article: [[Troubleshoot Firefox issues caused by malware]]. These on-demand scanners are free and take considerable time to run. If they finish quickly and especially if they require payment, you may have a serious infection. I suggest the specialized forums listed in the article in that case.
Success?

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