Join the Mozilla’s Test Days event from 9–15 Jan to test the new Firefox address bar on Firefox Beta 135 and get a chance to win Mozilla swag vouchers! 🎁

Funkcionalnosć toś togo sedła se pśez wótwardowańske źěła wobgranicujo, kótarež maju wašo dožywjenje pólěpšyś. Jolic nastawk waš problem njerozwězujo a cośo pšašanje stajiś, wobrośćo se na našo zgromoźeństwo pomocy, kótarež na to caka, wam na @FirefoxSupport na Twitter a /r/firefox na Reddit pomagaś.

Pomoc pśepytaś

Glědajśo se wobšudy pomocy. Njenapominajomy was nigda, telefonowy numer zawołaś, SMS pósłaś abo wósobinske informacije pśeraźiś. Pšosym dajśo suspektnu aktiwitu z pomocu nastajenja „Znjewužywanje k wěsći daś“ k wěsći.

Dalšne informacije

What can possibly be blocking ads?

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From time to time, various sites inform me that I have an ad blocker which is preventing the site from working correctly. I have looked through most if not all of the solutions offered to this problem, but not one appears to be relevant: (1) There is no sign of any ad-blocking add-on or facility either in my Firefox (v46.0.1) toolbars or in my list of installed extensions! (Unless it is Kaspersky's Dangerous Websites Blocker?)

So what can I disable or uninstall? (2) I shall try running Malwarebytes again, but it has never reported any such problem in Firefox before

From time to time, various sites inform me that I have an ad blocker which is preventing the site from working correctly. I have looked through most if not all of the solutions offered to this problem, but not one appears to be relevant: (1) There is no sign of any ad-blocking add-on or facility either in my Firefox (v46.0.1) toolbars or in my list of installed extensions! (Unless it is Kaspersky's Dangerous Websites Blocker?) So what can I disable or uninstall? (2) I shall try running Malwarebytes again, but it has never reported any such problem in Firefox before

Wšykne wótegrona (2)

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I see that message a lot. Never had an issue with those sites.

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac=Options)
key, and then starting Firefox. A small dialog should appear. Click Start In Safe Mode (not Refresh).

Is the problem still there?

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Any content blocking, script blocking, or anti-tracking extension could be interpreted by a site as an ad blocker. Sites recognize that the ad didn't load (for some unknown reason) and go from there.

If this happens in a private browsing window, it could be the Tracking Protection feature. If there is a little shield icon to the left of the address, you can use that to temporarily allow the tracking-related content on the page. This article has more information: What happened to Tracking Protection?.