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.

ابحث في الدعم

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

Optimum Webmail InBox Unable to Open Since V58.x

  • 2 (ردّان اثنان)
  • 1 has this problem
  • 1 view
  • آخر ردّ كتبه FredMcD

more options

WIN7/64 bit - all latest updates. Since v58.x (and now v60), my Optimum Webmail client will not open in Firefox. I just get a spinning wheel. I can log into optimum.net (the host). I can even see how many new emails I've received, I just can't open my email inbox.

Been using FF for @20 years (since late 90s), and have used this same email client all along. What has changed? When I fall back to pre-v58 version of FF all is well.

Thanks, Danny V.

WIN7/64 bit - all latest updates. Since v58.x (and now v60), my Optimum Webmail client will not open in Firefox. I just get a spinning wheel. I can log into optimum.net (the host). I can even see how many new emails I've received, I just can't open my email inbox. Been using FF for @20 years (since late 90s), and have used this same email client all along. What has changed? When I fall back to pre-v58 version of FF all is well. Thanks, Danny V.

All Replies (2)

more options

Separate Security Issue: Update your Flash Player or remove it using these links; http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html Uninstall Flash Player | Windows http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-mac-os.html Uninstall Flash Player | Mac

Note: Windows users should download the ActiveX for Internet Explorer. and the plugin for Plugin-based browsers (like Firefox).

Note: Windows 8 and Windows 10 have built-in flash players and Adobe will cause a conflict. Install the plugin only. Not the ActiveX.

Flash Player Version: Version 29.0.0.171

https://get.adobe.com/flashplayer/ Direct link scans current system and browser Note: Other software is offered in the download. <Windows Only>

https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, Win IE . . . .) Note: Other software is offered in the download. <Windows Only> +++++++++++++++++++ See if there are updates for your graphics drivers https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration

more options

Make sure you are not blocking content.

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?


One issue that seems more common lately is Firefox's Tracking Protection feature. When it is blocking content in a page, a shield icon will appear at the left end of the address bar next to the padlock icon. This article has more info on managing this feature: Tracking Protection {web link}