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I have been unable to add an iCalendar link in outlook.

Leo Cappello 0 Reputation points
2025-10-22T17:48:05.37+00:00

I have the ical link to add it to my calendar in outlook, but I get a "try again later" error no matter what I do in classic Outlook. In the new outlook, I am able to enter the ical link and the new calendar shows up, but its blank with 0 events or meetings when it should be populated. I am the only one having this problem, other employees were able to link this same calendar just fine, so I am wondering if it has something to do with my permissions in Microsoft or something else. Any help with this is appreciated.

Outlook | Windows | Classic Outlook for Windows | For business
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  1. Hani-N 4,390 Reputation points Microsoft External Staff Moderator
    2025-10-22T20:58:47.4933333+00:00

    Hi @Leo Cappello, 

    Thank you for posting your question in the Microsoft Q&A forum.       

    It appears you're encountering an issue where the iCal calendar link either shows a “Try again later” error in Classic Outlook or loads as a blank calendar in New Outlook. 

    Based on Microsoft’s documentation and known behavior across Outlook versions, here are a few insights: 

    • In Classic Outlook, the error is often related to how Outlook handles authentication with external calendar servers. Some servers may reject the connection, resulting in the “Try again later” message. 
    • In New Outlook, the calendar may appear but show no events if the server doesn’t respond correctly or if the calendar requires specific permissions or headers that aren’t being sent. 

    Here are a few suggestions that may help migrate the issue: 

    1/ Try Outlook web app (OWA): 

    This method avoids some of the authentication issues seen in desktop apps. 

    • Go to Outlook Web Calendar. 
    • Click Add calendar   User's image
    • Subscribe from web and paste your iCal link.  User's image

    2/ Use the correct link format: 

    • If your calendar link starts with https://, you can try replacing it with webcal://. This format is specifically designed for calendar subscriptions and may resolve compatibility issues.  User's image

    3/ Check permissions: 

    • Since other employees can access the calendar, it’s worth checking if your account has any restrictions or conditional access policies that might block the sync. 

    For more technical details, you can refer to Microsoft’s official troubleshooting guide here: 

    Can't add an Internet calendar - Outlook | Microsoft Learn 

    Note: Please understand that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.  

    I hope this information is helpful. Please follow these steps and let me know if it works for you. If not, we can work together to resolve this.  

    Thank you for your patience and your understanding. If you have any questions, please feel free to reach out.  

    I'm looking forward to your reply.  

     

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".   User's image

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