Forum Discussion

Solvang's avatar
Solvang
Tin Contributor
Sep 24, 2026

Intermittent “We can’t retrieve the calendar events right now” error in Outlook team calendars

We are receiving an increasing number of reports from users who are unable to view colleagues’ calendars in Outlook. The following error is displayed:
“We can’t retrieve the calendar events right now. Wait a few minutes and try again.”

The issue appears to be intermittent and inconsistent across Outlook clients:

Some calendars work in Outlook on the web but not in New Outlook or Classic Outlook.
Other calendars fail in OWA as well.
A calendar may work temporarily and then fail again after restarting Outlook or switching between New and Classic Outlook.
Some users first experienced the issue yesterday, while others have experienced it for more than a week.

One affected user is a manager with nine direct reports. Outlook automatically displays these users under “Team: [Manager name]”. However, the number of visible team members changes after restarting Outlook or switching clients. For example, the group may contain all nine members at one point and only three at another.

The Manager attribute and reporting structure have been verified in Active Directory/Entra ID and are correct for all team members.

 

Our Service Desk has already tested the following without resolving the issue:

-Outlook on the web, New Outlook and Classic Outlook
-Removing and adding the affected calendars again
-Adding calendars manually using the users’ primary SMTP addresses
-Resetting the Outlook navigation pane
-Resetting Outlook views
-Creating a new Outlook profile
-Verifying the users’ Manager attributes and reporting structure

Because the issue also occurs intermittently in OWA and the membership of the automatically generated Manager’s Team Calendar changes, this does not appear to be limited to the local Outlook profile.

 

Has anyone else experienced this recently?

Could this be a known Exchange Online issue involving the automatically generated Manager’s Team Calendar, shared-calendar synchronization or mailbox-side calendar navigation data?

Are there any additional diagnostics or supported methods for rebuilding the Manager’s Team Calendar configuration in Exchange Online?

exchange
outlook for windows
outlook on the web

3 Replies

  • h892gu's avatar
    h892gu
    Tin Contributor
    Sep 25, 2026

    my org is sporadically experiencing the same issue starting yesterday. Below is a screenshot. A green triangle will show to the left of the calendar in the navigation pane also. 

     

  • AMCC's avatar
    AMCC
    Copper Contributor
    Sep 25, 2026

    Have experienced the same scenario in our setup. Exactly as you have described it. Support has been requested from Microsoft but haven't heard if they are officially recognizing as an issue or not.

    Work around for my team has been to manually add the team calendars members as People calendars.

    • Select a coworker's calendar under the automatically populated Team: <Manager> calendar group.
    • Outlook displays: "We can't retrieve your calendar events right now. Please wait a few minutes and try again."
    • Select the exact same coworker's calendar under People's calendars.
    • The coworker's calendar loads successfully.
    • Select the coworker again under Team: <Manager>.
    • The Team calendar now loads successfully.

    This workaround doesn't persist after closing and reopening outlook however so its not perfect but shows its just the Team calendar that fails to load the calendars properly.

    EDIT- Have found a new workaround by ensuring no duplicated calendars are added on top of the manager calendar. Once we removed the duplicates the team calendar worked as expected.