Setting up Outlook 2016 with CalDAV Synchronizer with Horde Webmail to sync calendar and contacts

For Outlook set up with IMAP accounts, you need to download and install a 3rd party software like the Outlook extension CalDav Synchronizer to sync your Horde Webmail calendar in Outlook.

  • Note: We provide these instructions as a courtesy.
    Both Outlook and the CalDav Synchronizer extension are third party products, we have no control over any changes or updates and it may stop functioning. If this happens, here is the link to the CalDav Synchronizer Documentation and Support

Here is how to proceed:

1 - Download and install the CalDav Synchronizer extension for Outlook
2 - Open HIS Horde Webmail and copy the CalDAV url
3 - Open Outlook and click CalDav Synchronizer
4 - Add a new profile
5 - Account profile settings
6 - Initiate the first Sync
7 - Done.

1 - Download and install the extension

Note: Although it supports Outlook version 2007 to 2016, Outlook higher than 2013 is recommended.

  • Download.
  • Click on setup.exe
  • Follow the instructions to install it.

After you have installed it on your computer, you need to restart Outlook. The extension will then be visible in Outlook as a tab in the blue ribbon at the top.

2- Open HIS Horde Webmail and copy the CalDAV url

  • Log in to Horde Webmail and go to Calendar.
  • In the left side menu: Click on the pencil icon next to the calendar you want to sync, to open Settings.
  • Click on the Subscriptions tab and copy the CalDAV Subscription URL url link.
    It will look something like this:
    https://webmail._domain.com_/rpc.php/calendars/_username@domain.com_/calendar~FTdZ0X8P1juk0a-UkJ2cy/
    -Note: if you have already entered appointments in the Outlook Calendar, you can export it from Outlook and Import it using the Import tab.
  • Click Cancel to close the Webmail window.

3 - Open Outlook and click CalDav Synchronizer

  • Open Outlook and click the tab CalDav Synchronizer tab located under the blue bar at the top of the screen.

4 - Add a new Profile

  • Click Synchronization Profiles and wait for the page to open.
  • Click the green + icon in the top left corner.
  • Select Generic CalDAV/CardDav as a profile type.
  • Click Ok.

5- Account profile settings

Under Outlook Settings:

  • Fill-in the Calendar's name as you want to see it.
  • Outlook Folder: Click on the 3 dots (...) to browse and select the folder containing your Outlook profile's calendar or contacts.
    It usually shows with the mention (This computer only) after its name.
  • Click on "Synchronize items immediately after change".

Under Server Settings:

  • Paste the CalDav URL you copied from Horde Webmail into the DAV URL field.
  • Enter your full email address in the Username and Email address fields.
  • Enter your email password in the password field.
  • Leave the "Two way synchronization" mode selected.
  • Leave the default synchronization interval.
  • Click OK to create the profile.

6- In Outlook click the tab CalDav Synchronizer under the blue bar at the top of the screen.

  • Click "Synchronize Now".

7- Done

  • Logout of webmail.domain.com and re-login
  • You should now see the appointments you made in Outlook calendar in the Webmail Calendar.

Repeat as needed if you need to sync your contacts.
This time in step 4 select your Outlook profile's Contacts folder.


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