Activity for Outlook CalDav Synchronizer

R. Lehmann posted a comment on ticket #2158

R. Lehmann — Thu, 23 Apr 2026 09:35:30 -0000

additional

R. Lehmann created ticket #2158

R. Lehmann — Thu, 23 Apr 2026 09:34:45 -0000

Always Google Contacts Errors

Eric Pantekoek created ticket #2157

Eric Pantekoek — Sat, 18 Apr 2026 11:29:21 -0000

Sync-problems: The request was aborted: Could not create SSL/TLS secure channel.

Alexander Nimmervoll modified ticket #2155

Alexander Nimmervoll — Fri, 03 Apr 2026 17:04:49 -0000

CardDAV sync with WEB.DE fails with HTTP 308 Permanent Redirect in v4.6.0

Alexander Nimmervoll posted a comment on ticket #2155

Alexander Nimmervoll — Fri, 03 Apr 2026 17:04:49 -0000

thx for debbugging efforts!

Boris Bernhardt posted a comment on ticket #2155

Boris Bernhardt — Fri, 03 Apr 2026 16:55:19 -0000

Thanks too, Jochen, for being so supportive with all my questions and for pushing this across the finish line.

JoGa posted a comment on ticket #2155

JoGa — Fri, 03 Apr 2026 16:54:08 -0000

Issue resolved. Ticket may be closed. @caldavsync @nimm @nertsch

JoGa posted a comment on ticket #2155

JoGa — Fri, 03 Apr 2026 16:38:23 -0000

Thanks for confirming, Boris. Glad that it works now also on your end. Was very helpful to work on this together here, so I could convince web.de support that it is not an individual issue but they need to fix it on their end.

Boris Bernhardt posted a comment on ticket #2155

Boris Bernhardt — Fri, 03 Apr 2026 16:12:22 -0000

Sorry I was on a business trip and had no access...... I did refresh my carddav profile and can confirm success. Now everything works again perfect (as it did before the 23rd last month).

ultradj83 created ticket #2156

ultradj83 — Fri, 03 Apr 2026 12:20:09 -0000

/** * Monitoraggio duplicati Google Calendar. * Eseguire manualmente o impostare un trigger temporizzato. * * PREREQUISITO: Servizi → + → Google Calendar API * * - verifyDuplicates: controlla e logga i duplicati * - setupDailyCheck: imposta controllo automatico giornaliero * - removeTrigger: rimuove il controllo automatico */ const CALENDAR_ID = 'primary'; const EMAIL_ALERT = 'federico.rampin@gmail.com'; function verifyDuplicates() { const timeMin = new Date(); timeMin.setFullYear(timeMin.getFullYear() - 2); const timeMax = new Date(); timeMax.setFullYear(timeMax.getFullYear() + 2); let allEvents = []; let pageToken = null; do { const params = { timeMin: timeMin.toISOString(), timeMax: timeMax.toISOString(), maxResults: 2500, singleEvents: true, showDeleted: false }; if (pageToken) params.pageToken = pageToken; const response = Calendar.Events.list(CALENDAR_ID, params); allEvents = allEvents.concat(response.items); pageToken = response.nextPageToken; } while (pageToken); const seen = {}; const duplicates = []; for (const event of allEvents) { const start = event.start.dateTime || event.start.date; const end = event.end.dateTime || event.end.date; const key = [event.summary || '', start, end].join('|'); if (seen[key]) { duplicates.push(event); } else { seen[key] = true; } } Logger.log('Totale eventi: ' + allEvents.length + ' / Duplicati: ' + duplicates.length); if (duplicates.length > 0) { Logger.log('ATTENZIONE: ' + duplicates.length + ' duplicati trovati!'); duplicates.slice(0, 10).forEach(e => { const detail = Calendar.Events.get(CALENDAR_ID, e.id); Logger.log(' - "' + (e.summary || '') + '" il ' + (e.start.dateTime || e.start.date)); Logger.log(' id: ' + e.id); Logger.log(' created: ' + detail.created); Logger.log(' updated: ' + detail.updated); Logger.log(' creator: ' + (detail.creator ? detail.creator.email : 'N/A')); Logger.log(' organizer: ' + (detail.organizer ? detail.organizer.email : 'N/A')); Logger.log(' recurringEventId: ' + (detail.recurringEventId || 'N/A')); }); const fingerprint = duplicates.map(e => e.id).sort().join(','); const props = PropertiesService.getScriptProperties(); const lastFingerprint = props.getProperty('lastDuplicateFingerprint'); if (fingerprint !== lastFingerprint) { props.setProperty('lastDuplicateFingerprint', fingerprint); MailApp.sendEmail(EMAIL_ALERT, 'Google Calendar: ' + duplicates.length + ' duplicati trovati!', 'Trovati ' + duplicates.length + ' eventi duplicati nel calendario.\n\n' + 'Primi 10:\n' + duplicates.slice(0, 10).map(e => '- "' + (e.summary || '') + '" il ' + (e.start.dateTime || e.start.date) ).join('\n') ); Logger.log('Email inviata (nuovi duplicati)'); } else { Logger.log('Stessi duplicati di prima, email non inviata'); } } else { PropertiesService.getScriptProperties().deleteProperty('lastDuplicateFingerprint'); } return duplicates.length; } function removeDuplicatesV2() { const dupes = findDuplicates_(); Logger.log('Eliminazione di ' + dupes.length + ' duplicati...'); let deleted = 0; let errors = 0; for (const event of dupes) { try { Calendar.Events.remove(CALENDAR_ID, event.id, { sendUpdates: 'none' }); deleted++; Utilities.sleep(800); } catch (e) { if (e.message.indexOf('Not Found') !== -1 || e.message.indexOf('deleted') !== -1) { deleted++; } else if (e.message.indexOf('Rate Limit') !== -1) { Logger.log('Rate limit, pausa 30s...'); Utilities.sleep(30000); try { Calendar.Events.remove(CALENDAR_ID, event.id, { sendUpdates: 'none' }); deleted++; } catch (e2) { errors++; } } else { errors++; Logger.log('Errore: "' + (event.summary || '') + '": ' + e.message); } } } Logger.log('Eliminati: ' + deleted + ' / Errori: ' + errors); } function findDuplicates_() { const timeMin = new Date(); timeMin.setFullYear(timeMin.getFullYear() - 2); const timeMax = new Date(); timeMax.setFullYear(timeMax.getFullYear() + 2); let allEvents = []; let pageToken = null; do { const params = { timeMin: timeMin.toISOString(), timeMax: timeMax.toISOString(), maxResults: 2500, singleEvents: true, showDeleted: false }; if (pageToken) params.pageToken = pageToken; const response = Calendar.Events.list(CALENDAR_ID, params); allEvents = allEvents.concat(response.items); pageToken = response.nextPageToken; } while (pageToken); const seen = {}; const duplicates = []; for (const event of allEvents) { const start = event.start.dateTime || event.start.date; const end = event.end.dateTime || event.end.date; const key = [event.summary || '', start, end].join('|'); if (seen[key]) { duplicates.push(event); } else { seen[key] = true; } } return duplicates; } function setupDailyCheck() { removeTrigger(); ScriptApp.newTrigger('verifyDuplicates') .timeBased() .everyMinutes(10) .create(); Logger.log('Controllo ogni 10 minuti impostato'); } function removeTrigger() { ScriptApp.getProjectTriggers().forEach(t => { if (t.getHandlerFunction() === 'verifyDuplicates') { ScriptApp.deleteTrigger(t); } }); Logger.log('Trigger rimosso'); }

JoGa posted a comment on ticket #2155

JoGa — Mon, 30 Mar 2026 17:32:00 -0000

The trailing slash issue you identified helped a lot with that for sure. :-D

Grubsi posted a comment on ticket #2155

Grubsi — Mon, 30 Mar 2026 17:29:36 -0000

But you convinced the support that there might be something going on on their side 😊

JoGa posted a comment on ticket #2155

JoGa — Mon, 30 Mar 2026 17:27:30 -0000

I'd say that was some great effort we did together. Thanks, too!

Grubsi posted a comment on ticket #2155

Grubsi — Mon, 30 Mar 2026 17:26:14 -0000

Yes it's working for me! Thanks!

JoGa posted a comment on ticket #2155

JoGa — Mon, 30 Mar 2026 14:46:52 -0000

Update: the issue appears to be resolved now. WEB.DE support informed me today that contact synchronization via CardDAV should work again and that reconfiguration might be necessary. I then restored my original CalDav Synchronizer configuration, i.e. I reverted all workaround changes that I had made during testing, including restoring the trailing slash at the end of the CardDAV URL. After that, contact sync worked again without errors. My latest synchronization report completed successfully, and...

Grubsi posted a comment on ticket #2155

Grubsi — Sat, 28 Mar 2026 18:38:46 -0000

I guess they have updated or changed something and now the web server returns 308 on the URL with the slash at the end. Most clients won't have a problem as they follow the redirect.

JoGa posted a comment on ticket #2155

JoGa — Sat, 28 Mar 2026 18:12:15 -0000

Yes, that sounds exactly right. The root URL https://carddav.gmx.net/ is only the starting point. After discovery, the client normally resolves the actual account-specific full collection URL. If discovery is now broken, the easiest way to recover that full collection URL may be to read it from another client that still works, for example: DAVx5 on Android Thunderbird, if CardDAV is still configured there any other CardDAV client that is currently still connected In my WEB.DE case, DAVx5 still worked...

Boris Bernhardt posted a comment on ticket #2155

Boris Bernhardt — Sat, 28 Mar 2026 15:12:45 -0000

The procedure for the initial GMX carddav set up is to use the root url https://carddav.gmx.net/ and to hit the button "Test connection". The app then redirects itself to the correct link within GMX or provides a list with possible addressbooks ( in case you run more than just one addressbook). After successfully connected you will get in return a full collection URL. But as the app does not connect anymore, and after I deleted and reinstalled CalDav Synchronizer as I thought the error is on my side,...

JoGa posted a comment on ticket #2155

JoGa — Sat, 28 Mar 2026 12:43:54 -0000

Thank you, Grubsi, that is very helpful. This matches exactly what I observed on WEB.DE: with the trailing slash, CardDAV fails early with HTTP 308 Permanent Redirect without the trailing slash, reading starts to work, but creating new contacts fails with HTTP 404 So your explanation about the URL construction for Create makes a lot of sense to me. For additional context: I contacted WEB.DE support twice. Their initial feedback was essentially: they do not currently see a general CardDAV outage they...

JoGa modified a comment on ticket #2155

JoGa — Sat, 28 Mar 2026 12:35:47 -0000

1) What I meant was not removing the slash from a generic root URL like https://carddav.gmx.net/ In my case the workaround only changed the behavior when I removed the trailing slash from the full collection URL, not from the generic root URL. Example: with slash at the very end after "Contact": https://carddav.web.de/CardDavProxy/carddav/AddressBook/.../Contact/ without slash at the very end of the fill collection URL: https://carddav.web.de/CardDavProxy/carddav/AddressBook/.../Contact...

JoGa modified a comment on ticket #2155

JoGa — Sat, 28 Mar 2026 12:35:25 -0000

JoGa posted a comment on ticket #2155

JoGa — Sat, 28 Mar 2026 12:23:16 -0000

Boris Bernhardt posted a comment on ticket #2155

Boris Bernhardt — Sat, 28 Mar 2026 11:29:38 -0000

Sorry, but I can't follow.... would you mind describing the excact details of "removing the final slash in the calender Url tag" When I edit the options.xml the line shows: https://carddav.gmx.net/ Do I need to remove the / behind the .net?, save the file, reopen outlook and start the sync? That's at least what I did, but it didn't work. Note on the last entry before my message: "So we will have to wait for a new version or a fix at MX and/or Web.de. --> The synchronisation...

Grubsi posted a comment on ticket #2155

Grubsi — Sat, 28 Mar 2026 06:24:31 -0000

I have not tested creating new or updating entries before. I looked into creating and updating now. Updating seems to work. Creating fails with 404, because of how the URL is generated here: https://sourceforge.net/p/outlookcaldavsynchronizer/code/ci/master/tree/CalDavSynchronizer/DataAccess/CardDavDataAccess.cs#l245 The .Net new Uri replaces the Contact part at the end with the name of the VCard. So we will have to wait for a new version or a fix at GMX and WEB.DE.

JoGa modified a comment on ticket #2155

JoGa — Fri, 27 Mar 2026 18:54:00 -0000

Thank you, Grubsi! . I tried it with the following result: removing the trailing slash in CalenderUrl changes the behavior the previous 308 Permanent Redirect disappears synchronization starts and contact retrieval works but then CreateNewEntity fails with 404 Not Found therefore the issue seems split into: ** with trailing slash: read/list fails with 308 ** without trailing slash: read works, create fails with 404 . I tried to pursue the 404, but my attempts rather lead to duplicate contacts etc....

JoGa modified a comment on ticket #2155

JoGa — Fri, 27 Mar 2026 18:28:01 -0000

Thank you, Grubsi! I tried it with the following result: removing the trailing slash in CalenderUrl changes the behavior the previous 308 Permanent Redirect disappears synchronization starts and contact retrieval works but then CreateNewEntity fails with 404 Not Found therefore the issue seems split into: ** with trailing slash: read/list fails with 308 ** without trailing slash: read works, create fails with 404 I tried to pursue the 404, but my attempts rather lead to duplicate contacts etc. Did...

JoGa posted a comment on ticket #2155

JoGa — Fri, 27 Mar 2026 18:21:12 -0000

Grubsi modified a comment on ticket #2155

Grubsi — Fri, 27 Mar 2026 17:24:10 -0000

The problem is a redirect to URLs without a slash at the end. As a workaround for my GMX sync I did the following: Open the CalDav folder in your AppData: %appdata%..\Local\CalDavSynchronizer\ In the profiles.xml you find the GUID of the correct profile. Open the folder with that GUID. There open the options.xml and remove the final slash in the CalenderUrl tag.

Grubsi posted a comment on ticket #2155

Grubsi — Fri, 27 Mar 2026 17:18:55 -0000

The problem is a redirect to URLs without a slash at the end. As a workaround I did the following: Open the CalDav folder in your AppData: %appdata%..\Local\CalDavSynchronizer\ In the profiles.xml you find the GUID of the correct profile. Open the folder with that GUID. There open the options.xml and remove the final slash in the CalenderUrl tag.

JoGa posted a comment on ticket #2155

JoGa — Fri, 27 Mar 2026 10:10:44 -0000

That makes it much more likely that this is a common CardDAV redirect/discovery issue and not just a single broken profile. Please consider giving this ticket an upvote so the maintainers notice it faster (+ button at the header of this ticket).

JoGa posted a comment on ticket #2155

JoGa — Fri, 27 Mar 2026 10:09:39 -0000

Good to know GMX (United Internet like WEB.DE) is affected as well and that it started only recently. In my case since 23rd Mach 2026. This really looks like a broader issue and not like an isolated local setup problem. If you agree, please give this ticket an upvote (+ button on top of this ticket) so it gets more visibility.

JoGa modified a comment on ticket #2155

JoGa — Fri, 27 Mar 2026 10:07:48 -0000

Thank you both for confirming. This now looks increasingly like a broader GMX/WEB.DE (i.e. United Internet) CardDAV issue rather than a local profile or data problem. To summarize my case again: WEB.DE affected CardDAV contacts fail with HTTP 308 Permanent Redirect CalDAV calendar still works DAVx⁵ on Android works with the same account and URL a newly created CardDAV profile did not help a new dedicated app-specific password did not help either Since at least two more users now report the same behavior,...

JoGa modified a comment on ticket #2155

JoGa — Fri, 27 Mar 2026 10:07:24 -0000

JoGa posted a comment on ticket #2155

JoGa — Fri, 27 Mar 2026 10:04:29 -0000

Boris Bernhardt posted a comment on ticket #2155

Boris Bernhardt — Fri, 27 Mar 2026 07:00:32 -0000

Having exactly the same issue as described. I was trying all kind of "solutions" and workarounds to get it fixed, but failed in all attemps. Anyway, this seems to be a common problem these days....

Jean-Francois Fortier posted a comment on ticket #2155

Jean-Francois Fortier — Fri, 27 Mar 2026 02:04:14 -0000

I have the same problem with GMX CardDAV sync, I didn't start a full trouble shooting, but it started out of the blues last week, Error 308.

JoGa created ticket #2155

JoGa — Thu, 26 Mar 2026 10:54:41 -0000

CardDAV sync with WEB.DE fails with HTTP 308 Permanent Redirect in v4.6.0

Сергей Мартыненко created ticket #2154

Сергей Мартыненко — Thu, 26 Mar 2026 08:35:25 -0000

4.6.0.0 Error 500

Adam Brass modified a comment on ticket #2141

Adam Brass — Mon, 09 Mar 2026 19:50:00 -0000

I am having the same issue. I have 2 PC's with CalDavSynchronizer on them. Each are configured to sync the same Google calendar to the local Outlook calendar (2 way sync). It's a shared calendar with my wife. She just complained to me that something is wrong with google calendar. She added an event, and then duplicate events started showing up. Eventually there were like 6 or 7 duplicates. The behavior stopped once I closed Outlook on one of the PC's. I don't really need both open at the same time,...

Adam Brass modified a comment on ticket #2141

Adam Brass — Mon, 09 Mar 2026 19:49:38 -0000

Adam Brass posted a comment on ticket #2141

Adam Brass — Mon, 09 Mar 2026 19:48:06 -0000

I am having the same issue. I have 2 PC's with CalDavSynchronizer on them. Each are configured to sync the same Google calendar to the local Outlook calendar. My wife just complained to me that something is wrong with google calendar. She added an event, and then duplicate events started showing up. Eventually there were like 6 or 7 duplicates. The behavior stopped once I closed one of the Outlooks.

Heidi Sponholz created ticket #2153

Heidi Sponholz — Sat, 07 Mar 2026 09:01:52 -0000

Sync does no ore working with GMX

msku posted a comment on ticket #2152

msku — Thu, 05 Mar 2026 07:36:22 -0000

Same problem to me! Win11 25H2 + Outlook 2016

DirtyTobi created ticket #2152

DirtyTobi — Wed, 04 Mar 2026 22:10:37 -0000

CalDav Synchronizer 4.6 not working with GMX.de

Heidi Sponholz posted a comment on ticket #2151

Heidi Sponholz — Wed, 04 Mar 2026 15:27:56 -0000

I have the exact same problem

Monika Rolley created ticket #2151

Monika Rolley — Tue, 03 Mar 2026 09:24:15 -0000

CalDavSynchronizer stopped to sync

KingWah WONG created ticket #2149

KingWah WONG — Fri, 27 Feb 2026 16:04:42 -0000

synchronization error

Jon Stewart posted a comment on ticket #2148

Jon Stewart — Tue, 17 Feb 2026 15:23:24 -0000

This problem has gone away. Suspecting a problem calendar entry, I changed the advanced settings to synchronise from 5 days in the past to five days in the future. After that, I could synchronise without error. Then I changed back to the default 60 days in the past and 365 days in the future - and the problem did not return. I have been using CalDav for a couple of years and this is the only problem I've encountered, so if it is a one off perhaps this issue can be closed if there is not something...

Jon Stewart posted a comment on ticket #2148

Jon Stewart — Mon, 16 Feb 2026 11:10:56 -0000

Additional information: Windows version: Windows 11 Pro, 25H2 Outlook version: Version 2508 (version 19127.20302) CalDav version: 4.6.0.0

Jon Stewart created ticket #2148

Jon Stewart — Mon, 16 Feb 2026 11:04:17 -0000

Jon

Robert Welsh created ticket #2146

Robert Welsh — Thu, 12 Feb 2026 21:18:17 -0000

CalDAV Outlook Addin unable to synchronize outlook events when invalid email addresses are included in distribution

Werner Hoppmann created ticket #2145

Werner Hoppmann — Mon, 09 Feb 2026 09:01:18 -0000

Smart App Control wird aktiv

Werner Hoppmann created ticket #2144

Werner Hoppmann — Sun, 08 Feb 2026 11:06:14 -0000

Smart App Control

Matt Emery created ticket #2143

Matt Emery — Sun, 08 Feb 2026 09:26:45 -0000

Sync Issues

Christoph Booz created ticket #2142

Christoph Booz — Fri, 06 Feb 2026 16:35:47 -0000

CalDav Synchronizer / Synchronisation

Dirk Bourgeois created ticket #2141

Dirk Bourgeois — Tue, 03 Feb 2026 15:58:34 -0000

Duplicate Entries with 2 Systems

Claudio Treschau created ticket #2140

Claudio Treschau — Tue, 03 Feb 2026 08:02:07 -0000

Errorer Report nach jeder Synchonisation - Failed to delete the object ***

Ian Bartlett posted a comment on ticket #2132

Ian Bartlett — Mon, 02 Feb 2026 14:37:41 -0000

I am experiencing very similar for this attempted configuration: * Windows Pro 10 (build 19046.6466) * Outlook for Microsoft 365 (version 2601 build 16.0.19628.20132) 64-bit * CalDav Synchronizer version 4.6.0.0 (confirmed latest) * CalDav server: https://mail.worldooh.org:2080 In another context, I have been told that Outlook 365 changed certain methods of synchronisation in 2024. This rendered another email account unsuitable for sending. I am not technical.

Frank Jumppanen Andersen posted a comment on ticket #2139

Frank Jumppanen Andersen — Sun, 01 Feb 2026 10:46:38 -0000

second exmple: False System.IndexOutOfRangeException: Index was outside the bounds of the array. at DDay.iCal.Serialization.iCalendar.RecurrencePatternSerializer.Deserialize(TextReader tr) at DDay.iCal.Serialization.iCalendar.DataMapSerializer.Deserialize(TextReader tr) at DDay.iCal.iCalParser.property(ISerializationContext ctx, ICalendarPropertyListContainer c) at DDay.iCal.iCalParser.component(ISerializationContext ctx, ISerializerFactory sf, ICalendarComponentFactory cf, ICalendarObject o) at...

Frank Jumppanen Andersen created ticket #2139

Frank Jumppanen Andersen — Sun, 01 Feb 2026 10:39:39 -0000

System.IndexOutOfRangeException: Index was outside the bounds of the array.

Wolfgang Agler created ticket #2138

Wolfgang Agler — Fri, 23 Jan 2026 17:28:49 -0000

Problems ...

Wolf Buehl created ticket #2137

Wolf Buehl — Fri, 23 Jan 2026 08:42:01 -0000

Caldav is swapping appointments between people

Santiago Quer posted a comment on ticket #2132

Santiago Quer — Mon, 19 Jan 2026 16:25:21 -0000

Hello, It´s been a while since I opened this ticket. Any news?

Flipland modified a comment on discussion General Discussion

Flipland — Fri, 16 Jan 2026 00:23:38 -0000

I installed CalDaV Synchronizer v4.6.0 to sync "Generic CalDav/CardDav" calendar into Outlook. The sync feature works, but CalDav keeps issuing Synchronization Reports eact time sync is run. Is this normal? If not, then how can I set CalDav to only send the Syncnronization Reports when there IS a issue. A screenshot to the Synchronization Report is in the attached screenshot. Other details: Window OS Version 10.0.26200 Build 26200 Microsoft® Outlook® for Microsoft 365 MSO (Version 2512 Build 16.0.19530.20138)...

Flipland posted a comment on discussion General Discussion

Flipland — Fri, 16 Jan 2026 00:23:00 -0000

I installed CalDaV Synchronizer v4.6.0 to sync "Generic CalDav/CardDav" calendar into Outlook. The sync feature works, but CalDav keeps issuing Synchronization Reports eact time sync is run. Is this normal? If not, then how can I set CalDav to only send the Syncnronization Reports when there IS a issue. A screenshot to the Synchronization Report is in the attached screenshot. Looking forward to hearing from this group for guidance. Thank you!

Jan Grziwotz posted a comment on ticket #2135

Jan Grziwotz — Thu, 15 Jan 2026 11:58:47 -0000

Hello Support Team, Deleted contacts reappear after synchronization. We have several mailing lists – when we delete a contact from one of them, that deleted contact reappears in the list after CalDAV synchronization. Is there a solution for this problem? System: Windows 11 updated Office: Microsoft Office LTSC Professional Plus 2024 updated CalDAV synchronization updated. Sincerely, Jan Grziwotz

Jan Grziwotz created ticket #2135

Jan Grziwotz — Thu, 15 Jan 2026 11:58:05 -0000

Deleted contacts reappear after synchronization.

Helge Deller posted a comment on ticket #1960

Helge Deller — Thu, 08 Jan 2026 14:18:19 -0000

I'm having the same issue that Zoom invitations gets deleted when the Caldav Syncronizer starts to sync. Here is what happens: Zoom meetings, which are created in Outlook with the Zoom plugin, appear in the Outlook calendar. The invitation email is sent. Everything is OK. Then as soon as CalDav Syncronizer starts syncronization the entry gets deleted (and the external participant gets an email with cancellation of the meeting) (It did worked flawless with an older Outlook client on Windows10.) Outlook...

Stephanus created ticket #2134

Stephanus — Fri, 19 Dec 2025 07:05:32 -0000

error message: "'413' ('Request Entity Too Large')

Outlook CalDav Synchronizer updated /README.md

Outlook CalDav Synchronizer — Sun, 30 Nov 2025 11:06:03 -0000

Outlook CalDav Synchronizer updated /README.md

Outlook CalDav Synchronizer — Sun, 30 Nov 2025 11:05:04 -0000

Alexander Nimmervoll committed [554ecb] on Code

Alexander Nimmervoll — Sun, 30 Nov 2025 10:33:59 -0000

Update README.md, add Recall.ai blurb.

GitHub committed [c2c8a3] on Code

GitHub — Sun, 30 Nov 2025 10:27:38 -0000

Create FUNDING.yml

André Knies created ticket #2133

André Knies — Wed, 19 Nov 2025 08:58:24 -0000

CalDavSynchronizer.DataAccess.WebDavClientException

David modified a comment on ticket #2131

David — Sun, 16 Nov 2025 03:01:11 -0000

I have the same error & the synch fails on synching contacts with google. Synching with calendar is not an issue. If I manually synch after this error, the synch works. The error then returns on the next automatic synch , again a manual synch works. This is a new issue. I have just changed computers and upgraded to Windows 11 & Outlook classic (microsoft 365) OS Name Microsoft Windows 11 Pro Version 10.0.26200 Build 26200 Microsoft® Outlook® for Microsoft 365 MSO (Version 2510 Build 16.0.19328.20190)...

David modified a comment on ticket #2131

David — Sun, 16 Nov 2025 02:35:00 -0000

I have the same error & the synch fails. on synching contacts with google. Synching with calendar is not an issue. If I manually synch after this error, the synch works. The error then returns on the next automatic synch ^ again a manual synch works. This is a new issue. I have just changed computers and upgraded to Windows 11 & Outlook classic (microsoft 365)

David modified a comment on ticket #2131

David — Sun, 16 Nov 2025 02:25:14 -0000

David posted a comment on ticket #2131

David — Sun, 16 Nov 2025 02:22:21 -0000

Santiago Quer posted a comment on ticket #2132

Santiago Quer — Mon, 10 Nov 2025 15:07:08 -0000

I've also attached the raw report

Santiago Quer created ticket #2132

Santiago Quer — Mon, 10 Nov 2025 15:05:04 -0000

Can´t synchronize cPanel calendar with Outlook using CalDav Syncrhonizer

Paul Terry posted a comment on ticket #2131

Paul Terry — Wed, 05 Nov 2025 07:07:58 -0000

Synchronization report attached

Paul Terry created ticket #2131

Paul Terry — Wed, 05 Nov 2025 07:07:18 -0000

Synchronization profile executed with errors

ppdotnz64 created ticket #2130

ppdotnz64 — Fri, 31 Oct 2025 19:33:07 -0000

CalDav not loading after MS Outlook update

Aleksandar created ticket #2129

Aleksandar — Thu, 30 Oct 2025 21:16:08 -0000

SynologyContacts & Outlook sync fails for large number of contacts

Frank Heublein posted a comment on ticket #2126

Frank Heublein — Mon, 27 Oct 2025 14:12:33 -0000

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.

Alexander Nimmervoll modified ticket #2128

Alexander Nimmervoll — Fri, 24 Oct 2025 19:17:56 -0000

CalDav nicht aktivierbar

Roland Hartmann posted a comment on ticket #2128

Roland Hartmann — Fri, 24 Oct 2025 18:46:42 -0000

I think this ticket can be closed. Do not find an option to do it myself.

Roland Hartmann posted a comment on ticket #2128

Roland Hartmann — Fri, 24 Oct 2025 14:33:55 -0000

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

Roland Hartmann posted a comment on ticket #2128

Roland Hartmann — Fri, 24 Oct 2025 11:48:21 -0000

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?

Roland Hartmann created ticket #2128

Roland Hartmann — Fri, 24 Oct 2025 08:42:17 -0000

CalDav nicht aktivierbar

Alena Hatalová created ticket #2127

Alena Hatalová — Thu, 23 Oct 2025 10:51:04 -0000

CalDav connection issue

Frank Heublein created ticket #2126

Frank Heublein — Sat, 18 Oct 2025 15:10:30 -0000

Sync Fehler too many events per interval for ownerId

Markus Klein created ticket #138

Markus Klein — Tue, 14 Oct 2025 10:33:56 -0000

Warning notification before deletion of batch of items

Bolvári Attila created ticket #2125

Bolvári Attila — Wed, 08 Oct 2025 14:03:50 -0000

Icloud sync not working

jon posted a comment on ticket #2124

jon — Fri, 26 Sep 2025 16:15:27 -0000

whoops, lost the log file attachment which is here