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I can't find my calendar in upgrade to 45.0

Dustyrabbit
Dustyrabbit
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Thunderbird seems to have upgraded itself to 45.0 last night, and now I cannot find my calendar. There is no "calendar" option on the toolbar, and the add-on section seems to indicate that I don't have any add-ons. If I choose to download Lightning, will I lose my calendar info? Many thanks!

Thunderbird seems to have upgraded itself to 45.0 last night, and now I cannot find my calendar. There is no "calendar" option on the toolbar, and the add-on section seems to indicate that I don't have any add-ons. If I choose to download Lightning, will I lose my calendar info? Many thanks!

Chosen solution

Install the correct version of Lightning. Just like Thunderbird your Lightning data is separate from the program.

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user01229325
user01229325
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Chosen Solution

Install the correct version of Lightning. Just like Thunderbird your Lightning data is separate from the program.