Mozilla will shut down Pocket’s services on July 8, 2025. At that time users will no longer be able to access the Pocket website, apps and API. You can export your saved items and API data until October 8, 2025 before they are permanently removed. For more information, see this article.

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

The computer "239.255.255.250" is attempting to access Firefox.app on your computer. Do you want to allow this connection?

  • 4 replies
  • 24 have this problem
  • 38 views
  • Last reply by kvoliver23

What is this for? And if it is innocuous, can I just say allow? Just started in last 2 weeks (end of Feb 2015). It is bugging the heck out of me. Thanks.

What is this for? And if it is innocuous, can I just say allow? Just started in last 2 weeks (end of Feb 2015). It is bugging the heck out of me. Thanks.

Chosen solution

hello kvoliver23, this is caused by the "Send Video To Device" feature that landed in firefox 36 - if you don't use that you can safely block these requests. More information is available at How to stop Firefox from making automatic connections (under "Media capabilities" in particular).

Read this answer in context 👍 3

All Replies (4)

  1. what is your operating system?
  2. are you using antivirus on your system ?
  3. what is a version of mozilla firefox ?

my version is Firefox is 36.0.1 Mac Mavericks OS X 10.9.5 Antivirus: Norton Internet Security 5 for Mac version 12.7

thanks.

Chosen Solution

hello kvoliver23, this is caused by the "Send Video To Device" feature that landed in firefox 36 - if you don't use that you can safely block these requests. More information is available at How to stop Firefox from making automatic connections (under "Media capabilities" in particular).

many, many, many thanks!!!