The Office 365 calendar is a useful tool for managing your schedule and coordinating meetings with colleagues.
But there may be occasions when you need to hide your calendar from others, like when you have personal appointments or just want to maintain your privacy.
As a researcher working in digital security, I have to stress how important it is to control who can see your schedule.
Whether you use Outlook Calendar for web, for Mac, or Windows, I'll walk you through the steps to hide your calendar in Outlook.
Hiding Your Calendar in the Windows Desktop Outlook App
Open Outlook, then click on the 'Calendar' icon in the left side menu to access your Outlook Calendar.
In the Outlook Calendar, on the left side of the screen, make sure the calendar you want to hide is selected with a check in the box.
Navigate to the ribbon at the top of the page, making sure you're under the Home tab, before clicking 'Share Calendar'.
In the drop-down menu, click the name of the calendar you want to edit-a new window will open, displaying the list of people who have access to your calendar.
Work your way through the list of people, choosing whether to change the calendar permission associated with them or take away their access completely by clicking 'Remove'.
Confirm the removal and other changes you've made by clicking 'OK'.
To verify that your calendar is hidden, close and reopen Outlook before navigating back to the calendar permissions window to make sure that the changes applied correctly.
Hiding Your Calendar in the Mac Outlook App
Open Outlook, then click on the 'Calendar' icon in the left side menu to access your Outlook Calendar.
Right-click on the calendar you want to edit and click 'Sharing Permissions' from the drop-down menu.
A Calendar Properties window should appear, showing the list of parties you currently share your calendar with; click the arrow next to the person’s name you need to edit the permissions for.
In the drop-down menu, choose whether to change the level of access the person has or to remove sharing permissions completely.
Click 'Done' to finalise your amendments.
Hiding Your Calendar in the Outlook Web App
Navigate to your calendar on the web through whichever Microsoft 365 app you're using, or by heading to the link directly if you've it bookmarked.
Hover your cursor over the calendar you want to edit, and three dots should appear to the right of the calendar name.
Click the three dots, then select 'Sharing and Permissions' from the drop-down menu; the Sharing and Permissions window should open, showing a list of people who have permission to view your calendar.
Press the small arrow next to each person to alter the permissions they have, or click the trash icon to remove them entirely.
These changes should save automatically, so click the cross on the window to exit when you're finished.
Sharing Your Calendar in Office 365
Changed your mind and want to add someone back to your shared calendar?
Sharing Your Calendar in Outlook (Desktop)
Open Outlook, then click on the 'Calendar' icon in the left side menu to access your Outlook Calendar.
In the Outlook Calendar, on the left side of the screen, make sure the calendar you want to share is selected with a check in the box.
Navigate to the ribbon at the top of the page, making sure you're under the Home tab, before clicking 'Share Calendar'.
In the drop-down menu, click the name of the calendar you want to edit-a new window will open, displaying the list of people who have access to your calendar.
Click 'Add...' to open the Add Users window.
Find the individual you want to share your calendar with on the list, or search for their name in the search box.
Click their name and then press 'Add'; their name should appear in the users box at the bottom.
Press 'OK' to confirm your choice.
Sharing Your Calendar in Outlook (Mac)
Open Outlook, then click on the 'Calendar' icon in the left side menu to access your Outlook Calendar.
Right-click on the calendar you want to edit and click 'Sharing Permissions' from the drop-down menu.
A Calendar Properties window should appear with the list of parties you currently share your calendar with.
Press the '+' icon at the bottom left of the window, prompting a new window to appear.
Search for the person you want to share your calendar with in the search bar.
Choose the level of access you want the individual to have in the drop-down menu.
Click 'Add' to confirm your changes.
Sharing Your Calendar in Office 365 (Web)
Navigate to your calendar on the web through whichever Microsoft 365 app you're using, or by heading to the link directly if you've it bookmarked.
Hover your cursor over the calendar you want to edit, and three dots should appear to the right of the calendar name.
Click these three dots, and then select 'Sharing and Permissions' from the drop-down menu-the Sharing and Permissions window should open, showing a list of people who can view your calendar.
In the search box, type the email address or name of the person you want to share your calendar with and select them.
Choose which level of access they have to your calendar, then click 'Share'.
These changes should save automatically, so click the cross on the window to exit when you're finished.
Following these steps, and you can easily share or hide your calendar in Outlook, keeping your meetings private from prying eyes.
Remember that these changes only affect who can see your calendar.
They don't impact your ability to view or manage your own appointments.
"Protecting your personal information, including your schedule, is a fundamental aspect of digital security.
Taking control over who can access your calendar helps safeguard your privacy and professional boundaries."
Sabrina McClune is a Women in Tech Excellence 2022 finalist who writes extensively on cybersecurity, digital transformation, data protection, and digital identity. With a postgraduate degree in Digital Marketing (Distinction) and a First-Class Honours degree in English, she combines a strong academic foundation with professional expertise. At Beyond Encryption, Sabrina develops research-led content that supports financial and technology sectors navigating the complexities of the digital age.