Sync source gets deselected

[wKovacs]

Your environment

Ubuntu 23.10 with KDE
Syncing Office 365 calendar

TbSync version: 4.8
Thunderbird version: Betterbird 115.9.0-bb26 (64-bit) (but same problem with Thunderbird)

Expected behavior

Selected sync source stays selected

Actual behavior

Every few days the check mark before the calendar disappears an I have to select it again

Steps to reproduce

Setup an office 365 calendar for sync
wait a few days
check tbsync

[tantive-nessi]

Similar issue here (or maybe the same).
The account remains in the list, but all "Avaliable Resources" are deselected, so the calendar vanishes from the list of calendars in TB. I have to re-enable the calendar of the account, trigger the initial sync and then the calendar reappears with all the settings (e.g. color) in TB.

Environment

Windows 11
TB 115.10.1
TbSync 4.8

[ohmer1]

Same issue too with M365 calendars.

Ubuntu 22.04
Thunderbird 115.11.0
TbSync 4.8

[maehne]

I am observing the same issue with Microsoft 365 calendars and contacts on an up-to-date Arch Linux x86_64 installation with Thunderbird 115.10.2 (64-Bit) and TbSync 4.8.

[simonflutilliant]

Same issue here. Seems to be linked with loosing connections.

[mkeller-ergon]

Every 1-2 Weeks, all my O365 Calendars get unselected. In the Settings, I then see a yellow toast "All calendars are currently disabled". Happens on 2 separate Machines starting a few months ago.

[RRNYC]

Same. Happens frequently. Accounts remain listed, but all of the "Available Resources" are unchecked. Tried changing "Period synchronization" setting in hope that would fix it. It did not.

[mlassnig]

Still happens to me as well (O365) on the "Available resources". I have something like 20 different calendars subscribed in there, and have to click on each and every one of them every other week. At this point I'd even be happy about a simple "Enable All" button :-)

[RRNYC]

Still happening with seemingly increasing frequency.

[obsolete-al]

I have been experiencing this issue weekly as well. It seems to happen at random, with no indication of the items being deselected upon waking the computer from sleep, power the computer on, or starting/stopping Thunderbird.

[rmarce-icra-cat]

Exactly this problem on my TbSync, running Thinderbird 115.16.0esr (64 bits) on Ubuntu 22.04.4 LTS. The issue is present across all my 3 computers (same softw configuration, different machines: DELL, Lenovo)