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Shared Outlook Calendar has disappeared

John Schmidt 95 Reputation points
2026-06-16T20:54:22.8+00:00

An Outlook Calendar that my wife and I share has suddenly disappeared from my Outlook Calendar. It still appears on my wife's computer.

We set this up a number of years ago, so I have no idea where or how to troubleshoot this. I recall that we each had to create outlook.com email addresses so that we could access Microsoft Exchange.

We are using the Classic version of Outlook. In case it's useful, here's the exact information from the Outlook About page: "Microsoft® Outlook® for Microsoft 365 MSO (Version 2605 Build 16.0.20026.20168) 64-bit."

Thanks to anyone who can point me in the right direction to solve this problem.

Outlook | Windows | Classic Outlook for Windows | For home

11 answers

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  1. EmilyS726 240.6K Reputation points Independent Advisor
    2026-06-16T21:50:56.8566667+00:00

    Hello. I suspect that there is an issue on Microsoft’s side. There is no official announcement currently. However many users across different locales are posting the same issues today. I’m afraid we have to wait for Microsoft to fix this.

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    10+ people found this answer helpful.
  2. Tony Gafa 20 Reputation points
    2026-06-18T05:35:56.2633333+00:00

    Hi, I reached out to support and was given this answer.

    As per the Tier 2 team, I would like to inform you that we are currently receiving multiple cases related to this issue, and the engineering team is actively working to resolve it in a timely manner.

    Hopefully sort it out sooner rather than later.

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    10+ people found this answer helpful.
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  3. Paul Rothi 15 Reputation points
    2026-06-17T17:58:33.0433333+00:00

    I was able to reestablish seeing the shared calendars again by logging in to the account that owns the calendar and removing the accounts the calendar is shared with. Then readd the sharing to the accounts I want to share the calendar with. Restart Outlook for the account the calendar was shared with. We use Outlook Classic.

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    9 people found this answer helpful.
  4. CuddleBunny 0 Reputation points
    2026-06-17T01:16:40.3633333+00:00

    +1 for service side issue. My family has lost access to the shared calendars across all apps and operating systems despite the usual troubleshooting. Hopefully it's resolved overnight.

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    1 person found this answer helpful.

  5. AI answer

    2026-06-16T20:54:36.7033333+00:00

    The most likely cause is that the shared calendar connection in classic Outlook has broken or the calendar is still on the older sharing platform and needs to be re-added/“upgraded.” Because the calendar still appears on the owner’s (wife’s) computer, focus on re-adding it in classic Outlook on the affected computer.

    Use these steps in classic Outlook for Windows to re-add and upgrade the shared calendar:

    1. In Outlook, go to the Calendar view and locate the missing shared calendar entry (if it still appears but is empty or greyed out). If it is still listed:
      • Right‑click the shared calendar name.
      • Select Delete Calendar to remove the broken connection.
    2. Close Outlook completely.
    3. Reopen Outlook and go back to the Calendar module.
    4. On the Home tab in the Calendar view, select Add Calendar and then choose Open Shared Calendar…
      Important: Do not choose any option like “Add from address list,” as that adds the calendar using the older MAPI shared model.
    5. In the dialog, type or select the name of the calendar owner (wife’s Outlook.com/Exchange account) whose calendar is shared.
    6. Select OK. The shared calendar should reappear in the calendar list.
    7. Wait a few minutes for the initial sync to complete. Large calendars can take longer (up to hours) to fully repopulate, but events should gradually appear.

    If the calendar does not appear after re-adding it, verify on the owner’s side (wife’s Outlook.com/Outlook) that the calendar is still shared with the affected account and that the correct permissions are granted, then repeat the remove/re‑add steps.

    If there are still issues accessing the shared calendar after re-adding it, run the Outlook Calendar diagnostic using Microsoft Support and Recovery Assistant on the affected PC to detect and fix shared calendar access problems:

    1. On the affected computer, open a browser and go to the Advanced Diagnostics – Outlook Calendar page.
    2. Download and run SetupProd_CalCheck.exe.
    3. Install and run Microsoft Support and Recovery Assistant when prompted; it will automatically scan the Outlook calendar configuration and report or fix issues related to shared calendars and permissions.

    References:

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

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