Fix SharePoint Calendar Full Control User Cannot Edit Overlays
Question details
A SharePoint user with Full Control permissions is unable to edit the calendar structure or view overlay settings.
- Product
- Microsoft SharePoint
- Device & OS
- not provided
- Scenario
- Attempting to modify calendar list structures or manage overlay configurations within a SharePoint site.
- Observed behavior
- The user cannot edit the calendar structure or view the configured overlays, despite having Full Control permissions assigned.
Ensure you have site administrator privileges to verify and modify both site-level and list-level permissions in SharePoint.
Verify Site, List, and Overlay Source Permissions
Ensure the user has the correct level of access across the site, the specific calendar list, and all connected overlay source calendars.
A common cause of this issue is that the user only has Full Control over specific calendar items rather than the entire calendar list or the site itself. Overlay visibility also depends on permissions for the source calendars.
Navigate to Site Settings > Site permissions to confirm the user has Full Control at the broader site and calendar-list level, not just on individual events.
Go to Calendar Settings > Permissions for this list to ensure the calendar is inheriting permissions or that the user is explicitly granted Full Control on this specific list.
Check the permissions of the source calendars used in the overlays. The user must have sufficient access to the source lists to view and manage their overlay settings.
Ask another user with Full Control to attempt editing the calendar structure. This helps isolate whether the issue is systemic or account-specific.
Open a Microsoft 365 Service Request
If permissions are verified and the issue is isolated to a single account, escalate the problem to Microsoft Support.
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Frequently Asked Questions
Why can't a user with Full Control edit SharePoint calendar overlays?
Even with Full Control on a specific calendar item, the user might lack Full Control at the broader site or calendar-list level. Additionally, they must have proper access to the underlying source calendars used in the overlays.
How do I know if my SharePoint calendar has unique permissions?
Navigate to the calendar, click on the Calendar tab, select 'List Settings', and then click on 'Permissions for this list'. If it says 'This list has unique permissions', it is not inheriting permissions from the parent site.
What should I do if the calendar issue only affects one user?
If you have verified that the permissions are set correctly and other Full Control users can edit the overlays, the issue is likely account-specific backend glitch. Your Microsoft 365 administrator should open a support ticket in the Microsoft 365 admin center.
