Commands › Exchange Online

Update-OfflineAddressBook

Exchange Online ExchangeOnlineManagement Update-*

Update the offline address books (OABs) used by Microsoft Outlook clients.

Quick start script

# Update-OfflineAddressBook — quick start (serv365.ai)
# 1. Connect (app-only shown; interactive: omit the certificate parameters)
Connect-ExchangeOnline -CertificateThumbprint $thumb -AppId $appId -Organization $org

# 2. Capture the current state first — you cannot roll back what you never recorded
$before = Get-OfflineAddressBook
$before | Format-List

# 3. Make the change (dry run first)
Update-OfflineAddressBook -Identity <OfflineAddressBookIdParameter> -WhatIf
Update-OfflineAddressBook -Identity <OfflineAddressBookIdParameter>

# 4. Verify and diff
$after = Get-OfflineAddressBook
Compare-Object ($before | Out-String) ($after | Out-String)

Syntax

Update-OfflineAddressBook [-Identity] <OfflineAddressBookIdParameter>
 [-Confirm]
 [-DomainController <Fqdn>]
 [-Force]
 [-WhatIf]
 [<CommonParameters>]

Parameters (5)

Parameter	Type	Required	What it controls
-Identity	OfflineAddressBookIdParameter	yes	The Identity parameter specifies the GUID, distinguished name (DN), or OAB name that represents a specific OAB. You can also include the path by using the format Server\\OfflineAddressBookName.
-Confirm	SwitchParameter		The Confirm switch specifies whether to show or hide the confirmation prompt. How this switch affects the cmdlet depends on whether the cmdlet requires confirmation before proceeding.
-DomainController	Fqdn		The DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory. You identify the domain controller by its fully qualified domain name...
-Force	SwitchParameter		The Force switch hides warning or confirmation messages. You don't need to specify a value with this switch.
-WhatIf	SwitchParameter		The WhatIf switch shows what the command does without making any changes. You don't need to specify a value with this switch.

Reference facts derived from Microsoft documentation, © Microsoft, licensed CC BY 4.0; restructured with original guidance by serv365.ai.