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Office 365: Hide mail contacts from the Global Address List(GAL)

by 4 Comments

You can hide mail contacts from the GAL using Powershell with the Set-Mailcontact cmdlet. Example:

Set-MailContact -Identity [email protected] -HiddenFromAddressListsEnabled $true

Hiding a Mail Contact from the Global Address List in Office 365

The form below will generate the correct PowerShell for you:

  1. Enter the email address of the contact that you would like to hide (or unhide)
  2. Copy the generated code into a PowerShell window.
  3. You will be prompted for your Office 365 Credentials.
  4. The contact will be changed.

Your Powershell session should look something like this:
Image of Powershell session hiding a Mail Contact from the GAL

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Comments

  1. Zane says

    Can you add to the list of contact addresses or do you need to duplicate the entire line

    Set-MailContact -Identity [email protected] -HiddenFromAddressListsEnabled $true

    for each user?

    Thx! V helpful

  2. Sam says

    Hi

    Could you please help me with hiding all contacts in office 365 instead of one contact

    Thanks

  3. Noah R. de Wit says

    Sam,

    After running the login commands:

    $Cred = Get-Credential
    $Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell/ -Credential $Cred -Authentication Basic -AllowRedirection
    Import-PSSession $Session

    to change the attribute in bulk in all mail contacts:

    Get-MailContact | Set-MailContact -HiddenFromAddressListsEnabled $true

    to verify changes:

    Get-MailContact | select Name, Alias, HiddenFromAddressListsEnabled

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