Thunderbird Calendar always blank on launch
Thunderbird 78.4.1 on Windows 10 Pro ver 2004
A couple weeks back I was auto-updated to Thunderbird 78.x. Since updating to 78.x every time I open Thunderbird my Calendar is blank. Going into the calendar then hiding and unhiding my calendars causes the entries to appear but I have to do this each time I open the application.
When I first updated I tried reseting extensions.installedDistroAddon.{e2fda1a4-762b-4020-b5ad-a41df1933103} and that worked until today when I updated to 78.4.1 which re-broke it and now that entry is missing from the config editor.
Deleting everything in calendar-data (while Thunderbird was closed) also didn't help.
I also tried doing a standard uninstall-reinstall (e.g. I let the uninstaller run but didn't delete my profile from %APPDATA% or anything) but it's still broken.
Is there anything else I should do short of uninstalling Thunderbird, deleting the Thunderbird folder in %APPDATA%, and reinstalling?
פתרון נבחר
Help/Troubleshooting, Profile Folder, Open Folder, rename or delete xulstore.json, the file that stores the window and toolbar layout. Restart TB and see if the problem remains. If not, Options/General, toggle the setting for hardware acceleration, at the bottom. If none of those help, and the calendars use an add-on, e.g. Provider or TbSync, check that the version is up to date.
You could also try it with a new profile, created in Help/Troubleshooting, about:profiles. The existing profile is not affected.
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פתרון נבחר
Help/Troubleshooting, Profile Folder, Open Folder, rename or delete xulstore.json, the file that stores the window and toolbar layout. Restart TB and see if the problem remains. If not, Options/General, toggle the setting for hardware acceleration, at the bottom. If none of those help, and the calendars use an add-on, e.g. Provider or TbSync, check that the version is up to date.
You could also try it with a new profile, created in Help/Troubleshooting, about:profiles. The existing profile is not affected.
I forgot about Provider for Google Calendar. I unsubscribed from all my calendars, uninstalled that add-on, restarted, then reinstalled it. That seems to have fixed it.
After the upgrade from 6x to 78 I had to manually install a new version of Provider but never uninstalled the old version. There was probably some wonkiness there.