How to Keep Attendees Hidden When Adding Invitees in Outlook
Question details
The user needs to know how to ensure that the attendee list remains hidden when adding new people to an existing Outlook calendar invitation.
- Product
- Microsoft Outlook
- Device & OS
- not provided
- Scenario
- Adding new recipients to an existing Outlook meeting invitation that was originally created with a hidden attendee list.
- Observed behavior
- When new attendees are added through the Outlook desktop application, the hidden status is lost, and the attendee list becomes visible to both new and existing recipients.
Before updating your meeting invitation, make sure you have access to a web browser and your Microsoft login credentials, as you will need to use Outlook on the web to maintain attendee privacy.
Update the Invitation using Outlook on the Web
By managing the meeting update through the web version of Outlook rather than the desktop app, you can utilize the specific 'Hide attendee list' feature to keep all recipients confidential.
The Outlook desktop app handles meeting updates differently than its web counterpart. Modifying an event with hidden attendees via the desktop client frequently overwrites the privacy setting, exposing the list to everyone. To safely add new invitees without revealing the current attendees, you must process the update entirely through Outlook on the web.
Open your preferred web browser, navigate to Outlook.com or your Microsoft 365 webmail portal, and sign in with your account credentials.
Click on the Calendar icon located on the left-hand navigation pane to view your scheduled events.
Locate the meeting you wish to update on your calendar. Double-click the event and select 'Edit' to open the meeting details.
In the 'Invite attendees' field, type in the email addresses of the new recipients you wish to add.
Click on 'Response options' (or the gear settings icon) at the top of the meeting window. Ensure that the 'Hide attendee list' option is checked.
Click the 'Send' button. The new invitees will be added, and the entire attendee list will remain successfully hidden from all participants.
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Frequently Asked Questions
Why does the Outlook desktop app expose hidden attendees?
The desktop application processes meeting updates and synchronizations differently than the cloud-based web version. When adding attendees on desktop, it often resends the standard calendar file without strictly enforcing the hidden attributes, causing the attendee list to become visible.
Can I use the BCC field for Outlook calendar invites?
Unlike standard email messages, Outlook meeting invitations do not feature a traditional BCC (Blind Carbon Copy) field. To hide participants in a meeting, you must rely on the 'Hide attendee list' feature located in the Response Options.
Will existing attendees receive a notification when I add someone new?
When you update a meeting, Outlook typically prompts you to choose whether to send updates only to added/deleted attendees or to all attendees. Selecting the option to send only to added attendees prevents existing participants from receiving another email, though they might still see changes if they check the calendar item directly and the hidden status was compromised.
