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Downloads of v 4.4.1:


Last Update:

06 Apr 2023

Package Maintainer(s):

Software Author(s):

  • Gerhard Zehetbauer
  • Alexander Nimmervoll


outlookcaldavsynchronizer outlookcaldav caldav synchronizer outlook admin

Outlook CalDav Synchronizer (Install)

  • 1
  • 2
  • 3

4.4.1 | Updated: 06 Apr 2023



Downloads of v 4.4.1:



Software Author(s):

  • Gerhard Zehetbauer
  • Alexander Nimmervoll

Outlook CalDav Synchronizer (Install) 4.4.1

  • 1
  • 2
  • 3

This Package Contains an Exempted Check

Not All Tests Have Passed

Validation Testing Passed

Verification Testing Exemption:

Requires .NET 4.61


Scan Testing Successful:

No detections found in any package files

Learn More

Deployment Method: Individual Install, Upgrade, & Uninstall

To install Outlook CalDav Synchronizer (Install), run the following command from the command line or from PowerShell:


To upgrade Outlook CalDav Synchronizer (Install), run the following command from the command line or from PowerShell:


To uninstall Outlook CalDav Synchronizer (Install), run the following command from the command line or from PowerShell:


Deployment Method:


This applies to both open source and commercial editions of Chocolatey.

1. Enter Your Internal Repository Url

(this should look similar to https://community.chocolatey.org/api/v2/)

2. Setup Your Environment

1. Ensure you are set for organizational deployment

Please see the organizational deployment guide

2. Get the package into your environment

  • Open Source or Commercial:
    • Proxy Repository - Create a proxy nuget repository on Nexus, Artifactory Pro, or a proxy Chocolatey repository on ProGet. Point your upstream to https://community.chocolatey.org/api/v2/. Packages cache on first access automatically. Make sure your choco clients are using your proxy repository as a source and NOT the default community repository. See source command for more information.
    • You can also just download the package and push it to a repository Download

3. Copy Your Script

choco upgrade outlookcaldav -y --source="'INTERNAL REPO URL'" [other options]

See options you can pass to upgrade.

See best practices for scripting.

Add this to a PowerShell script or use a Batch script with tools and in places where you are calling directly to Chocolatey. If you are integrating, keep in mind enhanced exit codes.

If you do use a PowerShell script, use the following to ensure bad exit codes are shown as failures:

choco upgrade outlookcaldav -y --source="'INTERNAL REPO URL'" 

Write-Verbose "Exit code was $exitCode"
$validExitCodes = @(0, 1605, 1614, 1641, 3010)
if ($validExitCodes -contains $exitCode) {
  Exit 0

Exit $exitCode

- name: Install outlookcaldav
    name: outlookcaldav
    version: '4.4.1'
    state: present

See docs at https://docs.ansible.com/ansible/latest/modules/win_chocolatey_module.html.

chocolatey_package 'outlookcaldav' do
  action    :install
  source   'INTERNAL REPO URL'
  version  '4.4.1'

See docs at https://docs.chef.io/resource_chocolatey_package.html.

cChocoPackageInstaller outlookcaldav
    Name     = "outlookcaldav"
    Version  = "4.4.1"
    Source   = "INTERNAL REPO URL"

Requires cChoco DSC Resource. See docs at https://github.com/chocolatey/cChoco.

package { 'outlookcaldav':
  ensure   => '4.4.1',
  provider => 'chocolatey',
  source   => 'INTERNAL REPO URL',

Requires Puppet Chocolatey Provider module. See docs at https://forge.puppet.com/puppetlabs/chocolatey.

4. If applicable - Chocolatey configuration/installation

See infrastructure management matrix for Chocolatey configuration elements and examples.

Package Approved

This package was approved as a trusted package on 06 Apr 2023.


Outlook Plugin, which synchronizes events, tasks and contacts between Outlook and Google, SOGo, Horde or any other CalDAV or CardDAV server. Supported Outlook versions are 2016, 2013, 2010 and 2007.

Tested CalDAV Servers

Baïkal - Cozy Cloud - cPanel - Cyrus Imap 2.5 - DAViCal - EGroupware - FastMail - Fruux - GMX - Google Calendar - Group-Office - Horde Kronolith - iCloud - Kolab - Landmarks - Mac OS X Server - mail.ru - mailbox.org - Nextcloud - One.com - Open-Xchange - Owncloud - Posteo - Radicale - SabreDAV - SmarterMail - SOGo - Synology DSM - Tine 2.0 - Yahoo - Yandex - Zimbra 8.5 - Zoho Calendar


  • open source AGPL, the only free Outlook CalDav plugin
  • two-way-sync
  • Localization support
  • SSL/TLS support, support for self-signed certificates and client certificate authentication
  • Manual proxy configuration support for NTLM or basic auth proxies
  • Autodiscovery of calendars and addressbooks
  • configurable sync range
  • sync multiple calendars per profile
  • sync reminders, categories, recurrences with exceptions, importance, transparency
  • sync organizer and attendees and own response status
  • task support
  • Google native Contacts API support with mapping of Google contact groups to Outlook categories.
  • Google Tasklists support (sync via Google Task Api with Outlook task folders)
  • CardDAV support to sync contacts (distribution lists planned)
  • Map Outlook Distribution Lists to contacts groups in SOGo VLIST, KIND:GROUP or iCloud group format
  • time-triggered-sync
  • change-triggered-sync
  • manual-triggered-sync
  • Support for WebDAV Collection Sync (RFC 6578)
  • Category Filtering (sync CalDAV calendar/tasks to Outlook categories)
  • map CalDAV server colors to Outlook category colors
  • show reports of last sync runs and status
  • System TrayIcon with notifications
  • bulk creation of multiple profiles
  • Use server settings from Outlook IMAP/POP3 account profile
  • Map Windows to standard IANA/Olson timezones
  • Configurable mapping of Outlook custom properties
  • create DAV server calendars/addressbooks with MKCOL
  • Map Outlook formatted RTFBody to html description via X-ALT-DESC attribute
  • Support for RFC7986 per-event color handling, mapping of Outlook category color to COLOR attribute

Please see the full list on the project README.

Package Parameters

You can pass the following parameters:

  • Install for all users not just the current user: /allusers


--params '"/allusers"'


  • This is an automatically updated package. If you find it is out of date by more than a week, please contact the maintainer(s) and let them know the package is no longer updating correctly.

$ErrorActionPreference = 'Stop'

# create temp directory
do {
    $tempPath = Join-Path -Path $env:TEMP -ChildPath ([System.Guid]::NewGuid().ToString())
} while (Test-Path $tempPath)
New-Item -ItemType Directory -Path $tempPath | Out-Null

$packageArgs = @{
  packageName   = $env:ChocolateyPackageName
  unzipLocation = $tempPath
  fileType      = 'MSI'
  url           = 'https://github.com/aluxnimm/outlookcaldavsynchronizer/releases/download/v4.4.1/OutlookCalDavSynchronizer-4.4.1.zip'

  checksum      = 'ec2a0cdcf820f3781852d83ab7fe121ed5039a47f8805de5cfce89b521d7fd27'
  checksumType  = 'sha256'

  silentArgs    = "/qn /norestart"
  validExitCodes= @(0, 3010, 1641)

$arguments = Get-PackageParameters -Parameter $env:ChocolateyPackageParameters
if ($arguments.ContainsKey("allusers")) {
    $packageArgs.silentArgs += " ALLUSERS=1"

# Unzip the file to the tempPath and then install the MSI
Install-ChocolateyZipPackage @packageArgs

$packageArgs.file = Join-Path -Path $packageArgs.unzipLocation -ChildPath 'CalDavSynchronizer.Setup.msi'
Install-ChocolateyInstallPackage @packageArgs
$ErrorActionPreference = 'Stop'

$packageArgs = @{
    packageName    = $env:ChocolateyPackageName
    softwareName   = 'CalDavSynchronizer*' 
    fileType       = 'MSI'
    silentArgs     = '/qn /norestart'
    validExitCodes = @(0, 3010, 1605, 1614, 1641)

[array]$key = Get-UninstallRegistryKey @packageArgs
if ($key.Count -eq 1) {
    $key | ForEach-Object { 
        $packageArgs['file'] = "$($_.UninstallString)"
        if ($packageArgs['fileType'] -eq 'MSI') {
            $packageArgs['silentArgs'] = "$($_.PSChildName) $($packageArgs['silentArgs'])"
            $packageArgs['file'] = ''

        Uninstall-ChocolateyPackage @packageArgs
elseif ($key.Count -eq 0) {
    Write-Warning "$env:ChocolateyPackageName has already been uninstalled by other means."
elseif ($key.Count -gt 1) {
    Write-Warning "$key.Count matches found!"
    Write-Warning "To prevent accidental data loss, no programs will be uninstalled."
    Write-Warning "Please alert package maintainer the following keys were matched:"
    $key | ForEach-Object {
        Write-Warning "- $_.DisplayName"

Log in or click on link to see number of positives.

In cases where actual malware is found, the packages are subject to removal. Software sometimes has false positives. Moderators do not necessarily validate the safety of the underlying software, only that a package retrieves software from the official distribution point and/or validate embedded software against official distribution point (where distribution rights allow redistribution).

Chocolatey Pro provides runtime protection from possible malware.

Add to Builder Version Downloads Last Updated Status
Outlook CalDav Synchronizer (Install) 4.4.0 777 Tuesday, March 21, 2023 Approved
Outlook CalDav Synchronizer (Install) 4.3.0 2276 Tuesday, July 5, 2022 Approved
Outlook CalDav Synchronizer (Install) 4.2.0 3181 Wednesday, March 2, 2022 Approved
Outlook CalDav Synchronizer (Install) 4.1.0 17507 Wednesday, May 12, 2021 Approved
Outlook CalDav Synchronizer (Install) 4.0.0 19371 Tuesday, December 1, 2020 Approved
Outlook CalDav Synchronizer (Install) 3.8.2 1208 Tuesday, June 30, 2020 Approved
Outlook CalDav Synchronizer (Install) 3.8.1 410 Wednesday, June 24, 2020 Approved
Outlook CalDav Synchronizer (Install) 3.8.0 782 Friday, April 10, 2020 Approved
Outlook CalDav Synchronizer (Install) 3.7.0 945 Thursday, November 14, 2019 Approved
Outlook CalDav Synchronizer (Install) 3.6.2 1060 Wednesday, June 26, 2019 Approved
Outlook CalDav Synchronizer (Install) 3.6.1 564 Wednesday, April 24, 2019 Approved
Outlook CalDav Synchronizer (Install) 3.6.0 501 Wednesday, April 10, 2019 Approved
Outlook CalDav Synchronizer (Install) 3.5.0 646 Tuesday, February 26, 2019 Approved
Outlook CalDav Synchronizer (Install) 3.4.0 605 Sunday, January 13, 2019 Approved
Outlook CalDav Synchronizer (Install) 3.3.0 544 Monday, December 10, 2018 Approved
Outlook CalDav Synchronizer (Install) 3.2.1 631 Wednesday, September 12, 2018 Approved
Outlook CalDav Synchronizer (Install) 3.2.0 634 Thursday, May 17, 2018 Approved
Outlook CalDav Synchronizer (Install) 3.1.1 461 Wednesday, May 2, 2018 Approved
Outlook CalDav Synchronizer (Install) 3.1.0 544 Sunday, March 25, 2018 Approved
Outlook CalDav Synchronizer (Install) 448 Tuesday, March 20, 2018 Approved
Outlook CalDav Synchronizer (Install) 3.0.0 488 Sunday, February 11, 2018 Approved
Outlook CalDav Synchronizer (Install) 2.27.0 602 Sunday, December 24, 2017 Approved
Outlook CalDav Synchronizer (Install) 2.26.0 664 Wednesday, November 22, 2017 Approved
Outlook CalDav Synchronizer (Install) 2.25.0 613 Sunday, October 8, 2017 Approved
Outlook CalDav Synchronizer (Install) 2.24.0 531 Wednesday, September 13, 2017 Approved
Outlook CalDav Synchronizer (Install) 2.23.0 545 Sunday, August 13, 2017 Approved
Outlook CalDav Synchronizer (Install) 2.22.2 542 Thursday, July 13, 2017 Approved
Outlook CalDav Synchronizer (Install) 2.22.1 512 Monday, June 26, 2017 Approved
Outlook CalDav Synchronizer (Install) 2.21.0 512 Tuesday, June 13, 2017 Approved
Outlook CalDav Synchronizer (Install) 2.19.2 743 Monday, May 22, 2017 Approved
Outlook CalDav Synchronizer (Install) 2.19.1 520 Wednesday, April 19, 2017 Approved
Outlook CalDav Synchronizer (Install) 2.19.0 495 Monday, April 17, 2017 Approved
Outlook CalDav Synchronizer (Install) 2.18.0 461 Saturday, April 8, 2017 Approved
Outlook CalDav Synchronizer (Install) 2.17.0 508 Sunday, March 19, 2017 Approved
OutlookCalDavSynchronizer (Install) 2.16.0 531 Thursday, February 16, 2017 Approved
OutlookCalDavSynchronizer (Install) 2.15.1 472 Thursday, February 9, 2017 Approved
Discussion for the Outlook CalDav Synchronizer (Install) Package

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  • This discussion is only about Outlook CalDav Synchronizer (Install) and the Outlook CalDav Synchronizer (Install) package. If you have feedback for Chocolatey, please contact the Google Group.
  • This discussion will carry over multiple versions. If you have a comment about a particular version, please note that in your comments.
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  • Tell us what you love about the package or Outlook CalDav Synchronizer (Install), or tell us what needs improvement.
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