I've also attached the raw report
Can´t synchronize cPanel calendar with Outlook using CalDav Syncrhonizer
Synchronization report attached
Synchronization profile executed with errors
CalDav not loading after MS Outlook update
SynologyContacts & Outlook sync fails for large number of contacts
Oh wunder, der GMX support hat mir nicht weitergeholfen, ich habe keine Auskunft erhalten, ob der Fehler auf GMX Seite das Syncen verhindert hat. Aber einfach mal zwei Wochen ins Land gehen lassen hat geholfen. Es war jedenfalls eine temporäre Sperre. Die Daten sind gesynct. Anbei die beiden Logs, wenn Ihr Euch das anschauen wollt. Ihr könnt das Ticket aus meiner Sicht schließen.
CalDav nicht aktivierbar
I think this ticket can be closed. Do not find an option to do it myself.
Additional found out - seems by replacing the motherboard also the Visio-Studio-Runtime was destroyed. Have downloaded and installed it over via the following link - and now it is running. Even with still the file:/// before. https://www.microsoft.com/de-de/download/details.aspx?id=105522
Found out, that the location for this add-in is stored as file:///C:\Program Files (x86)\CalDavSynchronizer\CalDavSynchronizer.vsto@vstolocal The working add-in's do not have this file:/// before. Have not found where the information is stored to eliminate this file:/// before to test. Maybe this is the issue?
CalDav nicht aktivierbar
CalDav connection issue
Sync Fehler too many events per interval for ownerId
Warning notification before deletion of batch of items
Icloud sync not working
whoops, lost the log file attachment which is here
exception during synchronization
Hi, I solved the problem myself. When I removed Caldav Synchronizer with the help of the installation procedure, the map Caldavsynchronizer is not removed from my PC. It is stored in C:\programfiles(x86). By removing this map manually and then reinstalling Caldav synchronizer, the problem was solved. Thanks.
mtls uses wrong certificate
problema con calendario
Outlook CalDav Synchronizer forgets "Assign category color"
Windows 11 24H2 Outlook microsoft 365 (classic), re-installad today Caldav 4.6
This a screenshot of the pop-up that appears when I open Outlook.
Caldav fails to load; error in 5,33
Caldav does not install everywhere
Hello, CalDAV used to synchronize my Synology Calendar and Google Calendar. Since yesterday, synchronization with Google no longer works. I am attaching screenshots of the error messages and the text from the log file. I have no idea where to look for the error and would be very grateful for any help. Windows Version 10 64 Bit Pro Outlook Microsoft 365 Version 2506 CalDavSynchronizer Version 4.6.0.0
Hello, CalDAV used to synchronize my Synology Calendar and Google Calendar. Since yesterday, synchronization with Google no longer works. I am attaching screenshots of the error messages and the text from the log file. I have no idea where to look for the error and would be very grateful for any help.
Outlook friert immer wieder ein
Using Windows 10 Office 365 Caldav 4.6.0
Can't do anything
Wird das Problem bearbeitet oder kann man hier nur Probleme melden? Mit freundlichen Grüßen Michael Winter Von: tickets@outlookcaldavsynchronizer.p.re.sourceforge.net tickets@outlookcaldavsynchronizer.p.re.sourceforge.net Im Auftrag von Michael Winter Gesendet: Samstag, 16. August 2025 09:35 An: [outlookcaldavsynchronizer:tickets] 2115@tickets.outlookcaldavsynchronizer.p.re.sourceforge.net Betreff: [outlookcaldavsynchronizer:tickets] #2115 Synchronisierungsfehler Hier die Log Datei. Attachments:...
Problem is solved!
no sync
Hier die Log Datei.
Synchronisierungsfehler
Synchronization Issues between CalDav and Atlassian Teams calendar
Response status code does not indicate success '500'
Beim Synchronisieren werden auf dem Server die Terminen gelöscht
or you are just a user too?
Great,we you fix it?
We are seeing the same thing. We installed on 3 users computers as a test and this happened with all 3 users. We've uninstalled the application for now but I'll follow this ticket for more information
Further testing shows the error also when a recurring event is created for a future date, if the event is created for a time before the current time. (i.e. a single item is created for the start date-time and the recurrences are created beginning on the following day ). For example, it is 1:30pm on Friday 1 August and a recurring event is created in Outlook beginning on Monday August 4 at 8:00am. When the event is synced with the server, the error occurs. If the event is created instead for 8:00pm,...
Problem sync Synology Diskstation - MS Outlook Tasks
Pre-dated recurring calendar events synch with wrong dates
CalDavSync automatically cancels events... why?
Forgot to mention we are using Confluence version 9.2.4
Inconsistencies syncing Outlook & Confluence Calendars
for some reason, when someone sends me a calendar invite to my gmail address, it is sending an automatic response as declined. any idea why and how to fix? I contacted Google and they were able to determine via logs that calendar invites are being automatically declined due to you were using the third party application is "CalDAV API"
calendar invites auto declined
kein Banner in Outlook nach Installation von CalDav
Same problem for me with CalDavSynchronizer v4.6.0.0. After deleting and recreating the Google profile it works again for some hours. But then same error again.
Update 4.6 impossible sur Outlook 2024
Great tool, beats everything else I have used or tried. Unfortunately, I can't make it work since I upgraded to Outlook 2021. Used successfully on 2016 no problems. Posted a query in the discussion forum, hoping someone has actually used this with 2021 and I'm not just banging my head on the wall. Any suggestions would be appreciated.
I've tried it multiple times, and it just does not appear to work. Installs, shows up in Outlook Addins, enabled, never appears on menu bar. Seems to get de-enabled with first run. Chatgpt is no help, completely out of sync with what gets installed. Could not find the correct .dll module to manually add the addin. Didn't find any discussion about this, wondering if anybody has been able to make this combination work.
Task status falsely overwritten in Outlook after sync
Outlook 2019 Synchronization Executes but with errors
CalDav no longer synchronizing
Please close Ticket @ 2101 - The problem has been resolved. Thank you!
New version 4.6.0.0 still have the same issue :(
Update README.md and set version to 4.6.0.
Update NuGet packages.
On May 22, 2025, downloaded CalDav, installed and configured it correctly to have Zoho Web Based Calendar duplicate to Outlook Calendar on my PC and Vice versa. This worked very nicely for about 7 days. After that any changes made to the Zoho Web Based Calendar did NOT duplicate onto Outlook Calendar on my PC. Likewise, any changes made to the Outlook Calendar on my PC no longer duplicated onto the Zoho Web Based Calendar. I have no explanation as to why this is now taking place with the Calendars....
CalDav no longer synchronizing
Add Aruba Profile and areSyncSettingsVisibleInAdvancedSettings flag.
syncdav server unavaible error
Hinweise noch dazu. Dieser Termin ist ein Serientermin.
Orginal ICS File
ICS File Content: BEGIN:VCALENDAR PRODID:-//github.com/rianjs/ical.net//NONSGML ical.net 4.0//EN VERSION:2.0 BEGIN:VEVENT CLASS:PUBLIC DESCRIPTION: DTEND:20230117T120000 DTSTAMP:20250522T060033Z DTSTART:20230117T110000 RECURRENCE-ID:20230509T110000 SEQUENCE:1 SUMMARY:14-tägige Besprechung (A und B) UID:56600b95-0c2e-4fb0-b893-9872dd9682ed END:VEVENT BEGIN:VEVENT CLASS:PUBLIC DESCRIPTION: DTEND:20230117T120000 DTSTAMP:20250522T060033Z DTSTART:20230117T110000 RECURRENCE-ID:20230620T110000 SEQUENCE:2...
Error ICS File Import Outlook 2019
failure no "405"
Hi, meanwhile, I updated nextcloud to the latest Version (31.0.4) - but the error while synchronizing remains the same! Any hints plaese? Thanks dirk
Synchro error when invitation canceled
That's what Synology says: Also, it is a current design that all calendars of an user shares one CalDAV link, means you can sync all calendar with the same link, and there are no corresponding link for a single calendar. When I am synchronising my Synology NAS calendars with my Android mobile devices via DAVx5 then it works exactly this way: all calendars can be synchronised via the same link.
Synchronizing multiple Synology calendars with Outlook
CalDav Synchronizer error 400
CalDav Synchronizer error 503
Hello, I have the same problem, have you found the solution? Thank you.
Cal DAV sync problem
URGENT: Events getting deleted or copied once every sync
Outlook-Kalender wird nach Annahme von Besprechungen nicht synchronisiert / Outlook calendar is not synchronized after accepting meetings
Any new Information?
Daily OAuth authentication
Hi there, The same error appears again... thanks for requesting a higher limit. regards Rolf
I uninstalled it ontil this issue is resolved. The sync does not complete making this tool useless.
Two way sync with restrictions?
'500' ('Internal Server Error')
Good morning I'm synchronizing the calendar on some Outlook instances using a local nextCloud installation. This is a two way sync on all of the computers. One of these is having an error since a few days, where I'm not able to find the cause. The message I recieve at the CalDav Synchronizer Log is <?xml version="1.0" encoding="utf-16"?> <SynchronizationReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <ProfileName>Kalender</ProfileName> <ProfileId>bc6b77f6-9531-49a9-8742-d1ec881e4b92</ProfileId>...
Kontaktgruppen werden nicht synchronisiert und geben Fehlermeldung aus
does not synchronize with outlook