Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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

Why do I keep getting message saying Invalid hostname? How to sort this please NOW!!!!

Today when I insert a website address in toolbar I get the annoying message Invalid hostname. So what do I do please? This happens whether I prefix address with www or without any prefix.

Today when I insert a website address in toolbar I get the annoying message Invalid hostname. So what do I do please? This happens whether I prefix address with www or without any prefix.

Wšykne wótegrona (1)

That does sound annoying. Do your bookmarks still work, and links in pages? The problem is just with the address bar?

Where does the message appear, i.e., does an error page open instead of the expected page, or is there a pop-up dialog?


Does it make any difference if you disable your Ask toolbar? You can do that here:

orange Firefox button (or Tools menu) > Add-ons > Extensions category