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

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

Thunderbird calendar has been hijacked by Google calendar

  • 2 uphendule
  • 2 zinale nkinga
  • 8 views
  • Igcine ukuphendulwa ngu Geoff Cox

more options

I logged into Microsoft OneDrive which I have done before but this time my thunderbird page changed with the Inbox reading 'Microsoft Inbox' and the tab for the Thunderbird Calendar and the one in the tools box have disappeared. How do I reinstate the Thunderbird calendar?

Kind regards Geoff

I logged into Microsoft OneDrive which I have done before but this time my thunderbird page changed with the Inbox reading 'Microsoft Inbox' and the tab for the Thunderbird Calendar and the one in the tools box have disappeared. How do I reinstate the Thunderbird calendar? Kind regards Geoff

All Replies (2)

more options

Go to the Add Ons page, the Extensions tab. Is Lightning listed there. If not type lightning in the search box and install it. If it is just disabled, enable it.

more options

Many many thanks Airmail. Your solution has relieved me of a great deal of stress. Geoff