A shared calendar in Microsoft 365 makes it easier for teams to coordinate schedules, manage appointments, and keep everyone informed about upcoming events. Whether you're supporting a department, reception desk, or project team, a shared calendar provides a central place to organize and view schedules across your organization.

Method 1: Create a Shared Calendar in Outlook on the Web

1. Sign in to Microsoft 365

Open your web browser and sign in with your Microsoft 365 work or school account.

2. Open Calendar

In Outlook on the web, select the Calendar icon from the left-hand navigation pane.

3. Create a New Calendar

In the calendar pane, select Add calendar.

4. Choose a Blank Calendar

Select Create blank calendar.

5. Enter the Calendar Details

Provide a name for the calendar, such as:

• Team Calendar
• Reception Bookings
• Staff Roster
• Project Deadlines

Choose where you want the calendar to be saved.

6. Save the Calendar

Select Save.

7. Open Sharing Settings

Hover over the new calendar, select the three-dot menu, then choose Sharing and permissions.

8. Add Users

Enter the email addresses of the people who need access.

9. Assign Permission Levels

Choose the permission level that best matches each user's responsibilities:

• Can view when I'm busy – View availability only
• Can view titles and locations – View limited event information
• Can view all details – View full event details without editing
• Can edit – Create, modify, and delete events
• Delegate – Full management access on your behalf

10. Share the Calendar

Select Share or Send to apply the permissions.

Method 2: Open a Shared Calendar in Outlook Desktop

1. Open Outlook

Launch Outlook on your computer.

2. Switch to Calendar View

Select the Calendar icon.

3. Add the Shared Calendar

Choose one of the following:

• Add Calendar > From Address Book
• Open Shared Calendar

4. Find the Calendar

Search for the person's name or email address.

5. Open the Calendar

Select the calendar, then choose Open. The shared calendar will appear in your calendar list.

Method 3: Use a Shared Mailbox Calendar

If your organization uses a shared mailbox, such as support@company.com or reception@company.com, it may already include a shared calendar.

1. Confirm Access

Verify that you have permission to access the shared mailbox.

2. Open Outlook

Launch Outlook on your device.

3. Locate the Shared Mailbox

Find the shared mailbox in the folder list.

4. Open the Calendar

Expand the mailbox and select Calendar.

5. Start Using the Calendar

Use the shared mailbox calendar to manage bookings, appointments, shifts, or team events.

Shared Calendar Doesn't Appear

Basic checks:

• Refresh Outlook.
• Close and reopen the application.
• Wait a few minutes after the calendar has been shared.
• Confirm you're signed in with the correct Microsoft 365 account.

If the problem continues:

• Remove and re-add the shared calendar.
• Update Outlook to the latest version.
• Rebuild your Outlook profile.
• Clear the Outlook desktop cache.

Permission Denied or Access Errors

Basic checks:

• Verify the calendar was shared with the correct email address.
• Ask the calendar owner to resend the sharing invitation.

If the problem continues:

• Review Microsoft 365 sharing policies.
• Verify mailbox permissions in the Exchange Admin Center.
• Use PowerShell to confirm calendar folder permissions.

Calendar Isn't Syncing Across Devices

Basic checks:

• Confirm your internet connection is stable.
• Sign out of Outlook and sign back in.
• Refresh the calendar manually.

If the problem continues:

• Enable Cached Exchange Mode.
• Remove and re-add the account on mobile devices.
• Update Outlook on desktop or mobile.

Unable to Edit Events

Basic check:

Verify that the calendar owner has assigned you either Can edit or Delegate permissions. These permission levels allow you to create, update, and remove events. If you only have view access, ask the calendar owner to update your permissions.

If the problem continues:

• Confirm delegate permissions are configured correctly.
• Verify shared mailbox permissions include editing rights.

• Everyone using the shared calendar should have an active Microsoft 365 account.
• Grant Can edit or Delegate permissions only to trusted users.
• Some organizations restrict external calendar sharing for security reasons.
• Permission changes may take several minutes to appear.
• Deleting a shared calendar may remove important schedules or historical information.
• Shared mailbox calendars may require Outlook to restart before they appear.
• Outlook mobile provides access to shared calendars, although some desktop features may not be available.

A shared calendar provides a simple way for teams to coordinate schedules, appointments, and events across Microsoft 365. If you continue to experience problems with sharing, permissions, or synchronization after completing these steps, please contact Swazzy Support for further assistance.