Tap here to go to the mobile version of the site.
Your Firefox is out of date and may contain a security risk! Upgrade Firefox

Support Forum

I cannot open my Xfinity Comcast email with Mozilla Firefox 5.0. How do I fix it?


Comcast changed everything to Xfinity Comcast and now I cannot open my email messages with Mozilla Firefox 5.0. I can open emails with Explorer but not Mozilla Firefox. How do I fix it to open emails with Mozilla Firefox. Comcast said to contact Mozilla Firefox because emails open with Explorer so not a Comcast issue.

Additional System Details

This happened

Every time Firefox opened

This started when...


Installed Plug-ins

  • Office Plugin for Netscape Navigator
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Adobe PDF Plug-In For Firefox and Netscape "9.4.5"
  • Shockwave Flash 10.3 r181
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
  • Java(TM) Platform SE binary
  • Next Generation Java Plug-in 1.6.0_14 for Mozilla browsers
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Npdsplay dll
  • DRM Store Netscape Plugin
  • DRM Netscape Network Object


  • User Agent: Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0

More Information

pmitch 0 solutions 1 answers

I talked to Comcast today who told me that Comcast is "working diligently" to correct this problem but their email software is currently not compatible with Firefox 5.0. Told me to use IE! I don't want to use IE because of security issues.

cpdavis 0 solutions 3 answers

has anybody talked to Firefox? Can they do something about this? I HATE internet explorer and I'm being forced to use it. Any other suggested alternatives?

  • Top 10 Contributor
  • Moderator
3193 solutions 24378 answers

Xfinity Connect Lite works with Firefox 6.0 and 5.0, the regular "Connect" seems to be the problem. Change to Connect Lite while using IE, and then Firefox should use the "Lite" automatically.

cpdavis 0 solutions 3 answers

Helpful Reply

Thanks! That worked! The view is a little weird but I can use my email. Thanks!

jjon 0 solutions 2 answers

Helpful Reply

I have a desktop PC with WinXP,SP3. How do I get email from Comcast to open in Firefox12? in English

jjon 0 solutions 2 answers

How do you change IE to "Connect light"?