Caldav syn from ZOHO calendar does not sync all items #2041
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I am experiencing similar issues. I'm using calendars at zoho.eu. Individual appointments are missing from the calendar (aCalendar) on my Samsung S23 with DAVx5 from time to time. Despite reviewing the log file, I have not been able to determine whether this is due to DAVx5. However, I have now noticed that the DAVx5 accounts under ‘Synchronise account’ display the message ‘Synchronisation disabled for all items’? The ‘Synchronise now’ button is greyed out. I have checked the usual tips for synchronisation (battery optimisation, energy-saving mode). Interestingly, newly entered appointments on the Samsung are transferred to the Zoho calendar. What could be causing this behaviour? |
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It looks like davx5 doesn't pick up all ZOHO calendar appointments that need to be synced. And as these appointments are missed by davx5, they are also not shown in the davx5 logfiles. And yes new appointments are synced, but somehow after a day or two, they are not sycned anymore and they are removed from my samsung calendar. |
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Well to reproduce it: Add multiple items to your Zoho calendar of mulpiple days I tried setting the Past event time limit to 0 but can still see Zoho calendar items that are not synced by davx5 (but are visible on my samsung when using eg onecalendar (that has a build in Cavdav syn option) and my macbook (that also uses Caldav sync) |
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Hi Ricki,
I opened a ticket at ***@***.*** 9 month ago with
this problem, because I thought it's on behalf of Zoho.
I closed the ticket that time, because in a sudden after reconnecting
the calendars it worked well and I couldn't reproduce the error anymore.
The support was friendly and helpful, so you should give it a try.
Georg
Am 13.03.2026 um 09:14 schrieb Ricki Hirner:
…
I also set the "Past event time limit" setting to be "All events
will be synchronized".
Thanks for your report. However, when you set this setting to /empty
(All events will be synchronized)/, DAVx5 uses Collection
Synchronization <https://www.rfc-editor.org/rfc/rfc6578> and the
server doesn't report any events anymore (which means the server is
broken). This is already stated on https://www.davx5.com/tested-with/zoho.
So you can only use Zoho with a non-zero "past event time limit".
I wonder whether I should take the time and efforts the report the
Zoho issues and where. Do you think there's a reasonable chance that
somebody actually reads the reports and that things become fixed?
Do you know where to report such things?
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Hi Ricki -
I'll second that Zoho support is friendly and (most of the time) responsive. They do at least seem to take bug reports seriously.
Here's my suggestion: If you could draft up a description of what you believe is causing the issue and publish that in the forum, we (as end users) could use that as the basis for opening our own tickets with Zoho. That might help get attention because:
There would be many people reporting the same issue, and
The reports are coming from their own (paying) customers)
Thoughts?
Until recently DAVx5 has been bullet-proof, and I like being able to use 3rd-party calendar and contact apps, so I'm hoping we can get this resolved quickly.
Thanks.
From: ggikthuo ***@***.***>
To: ***@***.***>
Cc: ***@***.***>, ***@***.***>
Date: Sat, 14 Mar 2026 02:07:29 -0600
Subject: Re: [bitfireAT/davx5-ose] Caldav syn from ZOHO calendar does not sync all items (Discussion #2041)
Hi Ricki,
I opened a ticket at ***@***.*** 9 month ago with
this problem, because I thought it's on behalf of Zoho.
I closed the ticket that time, because in a sudden after reconnecting
the calendars it worked well and I couldn't reproduce the error anymore.
The support was friendly and helpful, so you should give it a try.
Georg
Am 13.03.2026 um 09:14 schrieb Ricki Hirner:
I also set the "Past event time limit" setting to be "All events
will be synchronized".
Thanks for your report. However, when you set this setting to /empty
(All events will be synchronized)/, DAVx5 uses Collection
Synchronization < https://www.rfc-editor.org/rfc/rfc6578 > and the
server doesn't report any events anymore (which means the server is
broken). This is already stated on https://www.davx5.com/tested-with/zoho .
So you can only use Zoho with a non-zero "past event time limit".
I wonder whether I should take the time and efforts the report the
Zoho issues and where. Do you think there's a reasonable chance that
somebody actually reads the reports and that things become fixed?
Do you know where to report such things?
—
Reply to this email directly, view it on GitHub
< #2041 (reply in thread) >,
or unsubscribe
< https://github.com/notifications/unsubscribe-auth/AIUCT63DQEA3RRWKJR2EG4D4QO7M7AVCNFSM6AAAAACWCVLS6OVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTMMJRGI2DIMY >.
You are receiving this because you commented.Message ID:
***@***.***>
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Reply to this email directly, #2041 (comment) , or https://github.com/notifications/unsubscribe-auth/A5S5CZUEBHLQKG3UICBH4LT4QUHMDAVCNFSM6AAAAACWCVLS6OVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTMMJSHA2DCNY .
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David Horton
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I am giving up on this bug. Apparently it can not be reproduced by some. So I am moving to CalendarSync that works flawless |
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Since the last 2 updates, syncing from ZOHO calendar via davx5 skips items. When calendar appointments are created (on my macbook via ZOHO calendar or Apple Calendar) all new items are synced via davx5 to my samsung S23. But a few sync moments later, some of these items are dropped and no longer synced (and also not anymore shown in the syn log). They are however still visible in Zoho calendar and on my macbook, but not anymore on my Samsung S23 (that uses davx5 to sync).
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