New outlook "add to calendar" does not work, ever. Why?

Mark Schwartz 20 Reputation points
2026-06-14T15:07:13.46+00:00

Please bring back Outlook Classic's capabilities so I can add items to my calendar from email.

Can't open an ICS file nor can a user drag an email to the calendar like before.

The new Outlook DOES NOT WORK, no matter how many file and program associations I set correctly. I've tried every troubleshooting tip I can find - No Luck.

I am curious as to why MS won't fix this.

Outlook | Windows | New Outlook for Windows | For home
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Answer accepted by question author
Chloe-V 13,440 Reputation points Microsoft External Staff Moderator
2026-06-15T04:10:32.55+00:00

Hi Mark Schwartz,

Welcome to Microsoft Q&A forum. 

I understand your frustration. Having to browse through folders just to locate the downloaded .ics file is not as convenient as the workflow in Outlook Classic.

Please note that this is a user-to-user support forum. Moderators, contributors including external Microsoft employees cannot directly intervene in Microsoft product features or access back-end systems. Our role is limited to providing technical guidance on reported issues, requests, or ideas only.

In new Outlook for Windows, the documented method to import an .ics file is still to go to Calendar > Add calendar > Upload from file > Browse, then select the .ics file and choose Import. At this time, I haven’t found an official setting that restores the same direct “open the .ics file and add it immediately to the calendar” behavior that Outlook Classic provides.

Setting the Windows file association may help choose which app opens .ics files in general, but new Outlook still uses the Calendar import flow for adding the file to your calendar.

If this one-step .ics workflow is important for your daily use, the most practical workaround for now is to use Outlook Classic for this specific task. Outlook Classic can still be used side by side with new Outlook.

You can also submit feedback through Help > Feedback in new Outlook to share your experience directly about this workflow.

References:

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  1. Hornblower409 15,825 Reputation points
    2026-06-15T04:59:27.0133333+00:00

    @Mark Schwartz said

    Why can't I just click on the .ICS file and open it directly???

    Using New Outlook for Windows when you get an email with an attached .ICS file, what is the error when you do?

    User's image

    User's image

    What account type is the invite from (e.g. GMail, outlook.com)?

    What is the account type receiving the invite?

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  2. Mark Schwartz 20 Reputation points
    2026-06-14T15:15:12.1966667+00:00

    Okay, so the .ICS file gets downloaded to a temp file buried five layers down in File Explorer.

    To add this to my calendar I have to browse my PC trying to locate the downloaded >ICS file, then upload it into Outlook.

    This is really a bogus approach. Why can't I just click on the .ICS file and open it directly???

    And, why make it so inconvenient to find the downloaded file??

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  3. AI answer

    2026-06-14T15:07:24.68+00:00

    In new Outlook for Windows, the behavior for adding calendar items from .ics files and from email is different from classic Outlook and is currently limited by design.

    For .ics files:

    • New Outlook does not open an .ics file directly into an event window when double‑clicked like classic Outlook did.
    • Instead, events must be imported from the Calendar view:
      1. Go to Calendar in the navigation pane.
      2. Select Add calendar.
      3. Select Upload from file, then Browse.
      4. Choose the .ics file and select Open.
      5. Under Select a calendar, choose the target calendar.
      6. Select Import.
    • Importing from .ics is only supported for Microsoft 365 Exchange accounts.

    This workflow is confirmed in the documentation and in community answers: double‑clicking an .ics file in new Outlook may appear to “do nothing” until the Calendar tab is opened, where the import dialog is shown and a calendar must be selected manually.

    For Internet calendars (.ics URLs):

    • When using Add calendar → Subscribe from web in new Outlook, some Internet calendar servers fail due to how Outlook’s modern authentication stack interacts with those servers. In those cases, the calendar simply is not added and no error is shown. This is a server‑compatibility issue, not a file‑association issue on the device.

    For Outlook.com subscriptions:

    • There was a known issue where subscribing to .ics/iCal calendars failed, but this has been fixed and Outlook.com continues to support .ics/iCal calendars.

    Regarding “why Microsoft won’t fix this”:

    • The available documentation explains the technical cause for some Internet calendar failures (modern authentication broadcast and incompatible servers) and confirms that .ics support is not being deprecated.
    • It also documents that new Outlook’s .ics handling is via Calendar → Add calendar → Upload from file, rather than the classic “open on double‑click” behavior.
    • No additional information is provided in the context about future changes or restoration of classic Outlook behaviors.

    If classic Outlook’s drag‑to‑calendar and direct .ics open behavior is required, the documented guidance indicates using classic Outlook, as new Outlook does not currently replicate all MAPI‑based and legacy behaviors.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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