Commands › Exchange Online

Dismount-Database

Exchange Online ExchangeOnlineManagement Dismount-*

Dismount databases. You can run this command only if the Microsoft Exchange Information Store service is running.

Quick start script

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

# 2. Run and inspect
Dismount-Database -Identity <DatabaseIdParameter> | Format-List

# 3. Export for evidence / drift tracking
Dismount-Database | Export-Clixml .\Database-$(Get-Date -Format yyyyMMdd).xml

Syntax

Dismount-Database [-Identity] <DatabaseIdParameter>
 [-Confirm]
 [-DomainController <Fqdn>]
 [-WhatIf]
 [<CommonParameters>]

Parameters (4)

Parameter	Type	Required	What it controls
-Identity	DatabaseIdParameter	yes	The Identity parameter specifies the database that you want to dismount. You can use any value that uniquely identifies the database. For example:
-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...
-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.