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A free ADMX browser or comparison tool for IT administrators.Search policies, find registry keys, and see exactly what each setting writes to the Windows Registry. Or compare two GPO backups to see exactly what has changed between them.

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Check for the user’s private key when the user sends an encrypted email that includes the user as a recipient

This policy setting controls whether Outlook checks for the user's private key when the user sends an encrypted email and the user is included as a recipient of the email. The user can be included as recipient either directly or as a member of a distribution list.

If you enable this policy setting, Outlook checks for the user's private key.

If you disable this policy setting, Outlook doesn't check for the user's private key.

If you don't configure this policy setting, Outlook checks for the user's private key.

Registry Information

VendorMicrosoft
ProductMicrosoft Outlook 2016
CategoryMicrosoft Outlook 2016 › Security › Cryptography
Applies toUser Configuration
Supported onWindows7
Registry Key[HKCU]softwarepoliciesmicrosoftoffice16.0outlooksecurity
Value Nameallowprivatekeycheck
TypeREG_DWORD
Enabled value1
Disabled value0

Registry File (.reg)

Windows Registry Editor Version 5.00

; Enable the policy
[HKEY_CURRENT_USERsoftwarepoliciesmicrosoftoffice16.0outlooksecurity]
"allowprivatekeycheck"=dword:00000001

; Disable the policy
[HKEY_CURRENT_USERsoftwarepoliciesmicrosoftoffice16.0outlooksecurity]
"allowprivatekeycheck"=dword:00000000

PowerShell

# Enable the policy
Set-ItemProperty -Path "HKCU:softwarepoliciesmicrosoftoffice16.0outlooksecurity" -Name "allowprivatekeycheck" -Value 1 -Type DWord

# Disable the policy
Set-ItemProperty -Path "HKCU:softwarepoliciesmicrosoftoffice16.0outlooksecurity" -Name "allowprivatekeycheck" -Value 0 -Type DWord