This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

I can't delete high stairs; I've deleted it on my pc, deleted it in apps in mozilla but it still works!

more options

High Stairs is some type of advertising that doesn't allow to work on my PC. I have already deleted it from my computed and from mozilla adds, I even deleted Mozilla and downloaded it once again but for some reason high stairs still works! Please, help me to delete this junk.

High Stairs is some type of advertising that doesn't allow to work on my PC. I have already deleted it from my computed and from mozilla adds, I even deleted Mozilla and downloaded it once again but for some reason high stairs still works! Please, help me to delete this junk.

All Replies (2)

more options

Ad / mal-ware likes to hide. Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.

more options

See this for specific help with removing the "Ads by High Stairs" malware 'virus'. http://malwaretips.com/blogs/ads-by-high-stairs-removal/