Microsoft is retiring an Outlook feature because it was causing too much confusion for users

Although people aren't really happy with how Microsoft has been breaking Outlook recently, the service is still heavily used, particularly in enterprise environments where organizations are entrenched deeply in Microsoft's ecosystem. Now, the Redmond tech giant has begun informing customers that is retiring a feature in Outlook.

According to a notice posted in the Microsoft 365 Admin Center, Microsoft is retiring the Contact Masking capability in Outlook. If you're unaware what that is, that is precisely one of the reasons why Microsoft is getting rid of this feature.

In a nutshell, Contact Masking is the experience which involves the suggested recipients in the To/Cc/Bcc line as you begin typing. Clicking on the "X" icon next to the name hides this contact as a suggestion in future communications, thereby "masking" the contact. This experience encompasses other services in the Microsoft 365 ecosystem too, as masked contacts are also removed from Teams, Microsoft 365 Search, and more.

Although customers do have the option to unhide the contact within five seconds through a prompt shown in Outlook, Microsoft says that the experience is too confusing overall in terms of implications to make it worthwhile. The company's decision to retire Contact Masking altogether is due to customer feedback and escalations that have resulted due to this feature in the past years.

Contact Masking is being retired on March 31, 2026 for all Outlook users across desktop, mobile, and the web. Admins have no control over this disablement, but are advised to update internal documentation and train users regarding this change, if required. Following the retirement of Contact Masking next month, contacts that were previously hidden will now begin showing up in Microsoft 365 services too. Microsoft has emphasized that there will be no replacement for Contact Masking and this disablement makes cross-app behavior consistent because it was applied across various services even though it was not a suite-level configuration for contacts.

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Posted Friday 20 February 2026 at 12:15 pm AEST (my time).

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