Can you stop mozilla firefox pop ups that claim a fake Trojan virus?

Reply to what?

You can block all or some popups. You could try that. Permissions and data >

''<p> [[#question-1601176|said]]</p>'' <blockquote>I have been getting Mozilla Firefox pop ups that claim my computer has a Trojan virus. I have updated Windows 11 and run a full scan. My computer is clean. They are trying to force me to buy McAfee. </blockquote> Are these as small popups on bottom right corner of Firefox window?. If so then these may just be web push notifications from sites you have allowed to send you notifications. Instead of useful information some may send you junk, spam or fake virus/trojan alerts etc. You can revoke the sites from sending you notifications as shown in KB article link below. https://support.mozilla.org/en-US/kb/push-notifications-firefox#w_how-do-i-revoke-the-notifications-permission-for-a-specific-site