Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Trying to download openh264.....zip everytime I open Mozilla

  • 2 replies
  • 0 have this problem
  • 1 view
  • Last reply by James

more options

Everytime I try to open Mozilla it automatically tries to download "openh264-win64-31c4d2e4a037526fd30d4e5c39f60885986cf865.zip" file, how to stop this ? TIA!!

Everytime I try to open Mozilla it automatically tries to download "openh264-win64-31c4d2e4a037526fd30d4e5c39f60885986cf865.zip" file, how to stop this ? TIA!!

All Replies (2)

more options

Dropa said

That's not from Firefox sounds like malware from either site or malware software.

You sure about that?

Why is there an OpenH264 plugin in Firefox? https://support.mozilla.org/en-US/kb/open-h264-plugin-firefox

more options

ASH said

Everytime I try to open Mozilla it automatically tries to download "openh264-...

Wonder if reinstalling Firefox may actually fix it as normally a reinstall does little.

You can download the full offline setup at https://www.mozilla.org/firefox/all/#product-desktop-release