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

Mulongo oyo etiyamaki na archive. Tuna motuna mosusu soki osengeli na lisalisi

HOw to get rid of black smears on websites?

more options

All Websites, Microsoft Excel and Word on computer screen have black smear/smudges.

All Websites, Microsoft Excel and Word on computer screen have black smear/smudges.

All Replies (3)

more options

Uninstalle Firefox and re-installe. (Sorry for bad english, im french)

https://www.mozilla.org/fr/firefox/new/

more options
more options

Do Word and Excel develop smudges even if you do not use Firefox, or do they appear to be "left behind" on the screen by Firefox and then appear in those positions regardless of which application you're using?