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One of my calendars (I have 5) in Lightning is locked, so I can't create new events in that specific calendar. How do I unlock it?

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I have 5 different calendars in Lightning (2.6.6). I can add events to 4 of them. The fifth is checked so that I can see all the events, but there is a little lock symbol next to the calendar name. When I open up the calendar properties, it is showing the Read Only box is checked, but I can't uncheck it (it is grayed out). I have been able to use this calendar plenty in the past.

Any ideas about how to unlock the calendar uncheck the Read Only box?

I have 5 different calendars in Lightning (2.6.6). I can add events to 4 of them. The fifth is checked so that I can see all the events, but there is a little lock symbol next to the calendar name. When I open up the calendar properties, it is showing the Read Only box is checked, but I can't uncheck it (it is grayed out). I have been able to use this calendar plenty in the past. Any ideas about how to unlock the calendar uncheck the Read Only box?

Alla svar (5)

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Right click the calendar, select Properties and clear the box for Read Only.

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The Read Only box is grayed out, so I can't uncheck it.

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Sorry I should have read further in your original post.

Is this a calendar that is synced with Google using the add on Provider? There have been some issues with the new version of Provider.

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1. The Google Provider is ver 1.0.1. (Not sure who how new it is). The thing is, the 4 other calendars work fine..

2. Is there a different add-on instead of Provider that I should be using?

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I do not use Google calendars but the forum has been full of issues with the sync add on provider.

Here is one that claims to have a solution. https://support.mozilla.org/en-US/questions/1025745