Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

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

This thread was archived. Please ask a new question if you need help.

Won't sync with icloud calendar

enso
enso
more options

I've used Lightning successfully for more than a year. Recently, sync stopped working. A pop-up windows asks for the password, again and again, but will not "connect".

I am not using two-factor authentication with icloud, and prefer it that way.

Is anyone currently syncing Thunderbird with their icloud calendar and NOT using 2-factor authentication?

I've used Lightning successfully for more than a year. Recently, sync stopped working. A pop-up windows asks for the password, again and again, but will not "connect". I am not using two-factor authentication with icloud, and prefer it that way. Is anyone currently syncing Thunderbird with their icloud calendar and NOT using 2-factor authentication?

Modified by enso

All Replies (1)

user01229325
user01229325
more options

On June 15 Apple made 2 factor authentication mandatory. You should check with Apple for support on setting it up.