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

att yahoo calendar says firefox vesion needs updating to work but it is already latest version

more options

when trying to use att yahoo calendar function this message pops up starting on 4/19/2018

"You're almost there, but your web browser doesn't support the newest version of AT&T Yahoo! Calendar"

my firefox version is 59.0.2 (32bit) and is the latest I know of

when trying to use att yahoo calendar function this message pops up starting on 4/19/2018 "You're almost there, but your web browser doesn't support the newest version of AT&T Yahoo! Calendar" my firefox version is 59.0.2 (32bit) and is the latest I know of

Chosen solution

disabling the avast antitrack premium addon allows calendar to work. Additionally, the avast antitrack allows a user to "whitelist" yahoo.com and doing so allows the calendar option to work without disabling the addon

Read this answer in context 👍 0

All Replies (2)

more options

Hi, I wonder if it it is looking for the 64bit version.

Please disable these and try : Avast AntiTrack Premium 1.3 Avast Online Security 12.0.296 or can try this way : SAFE MODE

In Firefox Safe mode these changes are effective:

  • all extensions are disabled (about:addons)
  • default theme is used (no persona)
  • userChrome.css and userContent.css are ignored (chrome folder)
  • default toolbar layout is used (file: localstore-safe.rdf)
  • Javascript JIT compilers are disabled (prefs: javascript.options.*jit)
  • hardware acceleration is disabled (Options > Advanced > General)
  • plugins are not affected
  • preferences are not affected

TEST''''is issue still there ? If not it is the 2 Extensions and you will need to go to the Avast Forums to find a solution.

Please let us know if this solved your issue or if need further assistance.

more options

Chosen Solution

disabling the avast antitrack premium addon allows calendar to work. Additionally, the avast antitrack allows a user to "whitelist" yahoo.com and doing so allows the calendar option to work without disabling the addon