Subscribe to Outlook calendar in other application

Question

I can find lots of *old* instructions on syncing/subscribing to an Outlook calendar (and Tasks, more importantly) from within Thunderbird.

But if I try with something like the Provider for Exchange ActiveSyncadd-in for Thunderbird (along with TBSync) it complains about OAuth2. I have OAuth2 working for my email, so now I need the same for Calendar.

Oh, and your "Platform" drop-down below is missing "Linux"

Answer 1

Except there's no "export" option on the web view or the Android client.

And I had been looking for a way to *keep* the calendar and tasks synchronized, not a single-time import.

Answer 2

I can find lots of *old* instructions on syncing/subscribing to an Outlook calendar (and Tasks, more importantly) from within Thunderbird.

But if I try with something like the Provider for Exchange ActiveSyncadd-in for Thunderbird (along with TBSync) it complains about OAuth2. I have OAuth2 working for my email, so now I need the same for Calendar.

Oh, and your "Platform" drop-down below is missing "Linux"

Hi JELaBarre,

I use the same apps you referenced in your post. I just updated the configuration on two Linux systems inside the Thunderbird v115.x.x desktop app to restore real-time calendar sync between Thunderbird and Outlook Web App.

The developer of the add-on TBSync updated the extension's capability to include an option for Microsoft Office 365 that complies with Oauth2 security. Please note the current version of TBSync is 4.8.

If you already have both the Provider for Exchange Active Sync & TBSync add-ons installed in Thunderbird, you will have to delete and re-add your account to select the Microsoft Office 365 option, complete authentication, enable synchronization, select the resources to be synchronized, and click "Synchronize now".

I hope this helps if you haven't already resolved the matter.

Kind Regards,

Answer 3

Hi JELaBarre,

Thank you for your reply, I'm sorry you didn't find my reply helpful, you can try my second tip for more advanced engineering help at https://learn.microsoft.com/en-us/.

I hope this information has been helpful. If you have any questions, please let me know and I will be happy to help you further.

Best Regards, 

Jim - MSFT | Microsoft Community Support Specialist

Answer 4

Hi JELaBarre,

Thanks for using Microsoft products and posting in the community. 

According to your description, you want to sync/subscribe to Outlook calendar in Thunderbird, you can try my suggestions below, I hope my suggestions will help you.

1. To sync your Outlook calendar in Thunderbird, you need to do it in an indirect way, because Thunderbird itself does not directly support Outlook calendar synchronization. Here is a common way to do this:

Use the Lightning extension and CalDAV

1. To install the Lightning extension:

First, you need to install the Lightning extension in Thunderbird. Lightning is a calendar extension that allows Thunderbird to manage calendars and tasks. Lightning can be found and installed in Thunderbird's add-on.

2. Export Outlook calendar to iCal format:

In Outlook, open the calendar you want to sync.

Choose File > Export Calendar.

In the save type, select the.ics format (iCal format).

3. Import the iCal file into Thunderbird:

• Open Thunderbird and go to the Lightning calendar view.
• Choose File > New > Calendar.
• Select On your local Computer or Network Calendar.
• Select the imported iCal file and complete the setup.

2. In addition, I see that you are using Thunderbird's Exchange ActiveSync plugin (and TBSync), and I'm sorry to say that my current environment does not allow me to test these two plugins. If you want to know the Exchange ActiveSync plugin (and TBSync) usage and the use of the environment, you can try to search for more senior engineers in the https://learn.microsoft.com/en-us/ for help.

I hope this information has been helpful. If you have any questions, please let me know and I will be happy to help you further.

Best Regards, 

Jim - MSFT | Microsoft Community Support Specialist