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.

Avatar for Username

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

Thread ini telah diarkib. Sila tanya soalan baru jika anda perlu bantuan.

Why am I suddenly missing Microsoft MPEG-1 (50), and how do I replace it?

  • 3 balasan
  • 3 ada masalah ini
  • 1 paparan
  • Balasan terakhir oleh cor-el

dhourigan1949
dhourigan1949
more options

This morning I attended a webinar using Go To Meeting and Firefox. There was a message that indicated I needed some sort of plug in to attend the webinar. I think it was Java Script. This afternoon I got a message on my RingCentral Account. I could navigate there and open my account, but I could not play my most recent message, though I could hear all of the old ones. I called RingCentral Tech Support and they could hear the message. I was told it was my browser and that I should use Google Chrome. I downloaded Google Chrome and played the message. I like Firefox better than Google Chrome. I am thinking that this might be related to the Webinar download this morning. So, how do I fix the Microsoft MPEG-1 (50) with Windows Media Player?

This morning I attended a webinar using Go To Meeting and Firefox. There was a message that indicated I needed some sort of plug in to attend the webinar. I think it was Java Script. This afternoon I got a message on my RingCentral Account. I could navigate there and open my account, but I could not play my most recent message, though I could hear all of the old ones. I called RingCentral Tech Support and they could hear the message. I was told it was my browser and that I should use Google Chrome. I downloaded Google Chrome and played the message. I like Firefox better than Google Chrome. I am thinking that this might be related to the Webinar download this morning. So, how do I fix the Microsoft MPEG-1 (50) with Windows Media Player?

All Replies (3)

philipp
philipp
  • Moderator
more options

the problem with your webinar is likely depending on the java plugin - firefox disabled old versions of the java plugin because they entailed serious security issues that left pcs open to infections. you can download the latest update which contains all the fixes from java.com

Hasan
Hasan
more options

For more info on Java plugin, see this article -> Use the Java plugin to view interactive content on websites

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

You can also try to install the new WMP plugin (np-mswmp.dll)