Commands › Exchange Online

Set-DlpKeywordDictionary

Exchange Online ExchangeOnlineManagement Set-*

For more information, see Security & Compliance PowerShell. Use the Set-DlpKeywordDictionary cmdlet to modify data loss prevention (DLP) keyword dictionaries in the Microsoft Purview compliance portal.

Quick start script

# Set-DlpKeywordDictionary — 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-DlpKeywordDictionary
$before | Format-List

# 3. Make the change (dry run first)
Set-DlpKeywordDictionary -Identity <SensitiveInformationTypeIdParameter> -WhatIf
Set-DlpKeywordDictionary -Identity <SensitiveInformationTypeIdParameter>

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

Syntax

Set-DlpKeywordDictionary [-Identity] <SensitiveInformationTypeIdParameter>
 [-Confirm]
 [-Description <String>]
 [-DoNotPersistKeywords]
 [-FileData <Byte[]>]
 [-MatchStyle <String>]
 [-Name <String>]
 [-WhatIf]
 [<CommonParameters>]

Parameters (8)

Parameter	Type	Required	What it controls
-Identity	SensitiveInformationTypeIdParameter	yes	The Identity parameter specifies the name of the DLP keyword dictionary that you want to modify. If the value contains spaces, enclose the value in quotation marks.
-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.
-Description	String		The Description parameter specifies descriptive text for the DLP keyword dictionary. If the value contains spaces, enclose the value in quotation marks.
-DoNotPersistKeywords	SwitchParameter		{{ Fill DoNotPersistKeywords Description }}
-FileData	Byte[]		The FileData parameter specifies the terms that are used in the DLP keyword dictionary. This parameter requires a comma-separated list of values that's binary encoded in UTF-16. For more information, see the examples...
-MatchStyle	String		{{ Fill MatchStyle Description }}
-Name	String		The Name parameter specifies a unique name for the DLP keyword dictionary. If the value contains spaces, enclose the value in quotation marks.
-WhatIf	SwitchParameter		The WhatIf switch doesn't work in Security & Compliance PowerShell.

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