GPO tool

Group Policy made searchable

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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Missing root certificates

This policy setting controls how Outlook functions when a root certificate is missing.

If you enable this policy setting, you can choose from three options that determine how Outlook functions when a root certificate is missing.

- Neither Error nor Warning. This option displays neither an error nor a warning, and enforces the default configuration in Outlook.
- Warning. This option ensures that Outlook displays a warning message when a root certificate is missing.
- Error. This option ensures that Outlook displays an error message when a root certificate is missing.

If you don't configure this policy setting, users will see an error when a root certificate is missing.

Registry Information

VendorMicrosoft
ProductMicrosoft Outlook 2016
CategoryMicrosoft Outlook 2016 › Security › Cryptography › Signature Status dialog box
Applies toUser Configuration
Supported onWindows7
Registry Key[HKCU]softwarepoliciesmicrosoftoffice16.0outlooksecurity

Policy Settings

Indicate a missing root certificate as a(n):

Registry Key[HKCU]softwarepoliciesmicrosoftoffice16.0outlooksecurity
Value Namesigstatusnotrustdecision
TypeREG_DWORD
Values
  • Neither error nor warning (0)
  • Warning (1)
  • Error (2)