This policy setting controls whether Outlook is required to use FIPS-compliant algorithms when signing and encrypting messages. ...

This policy setting controls whether Outlook is required to use FIPS-compliant algorithms when signing and encrypting messages.  Outlook can run in a mode that complies with Federal Information Processing Standards (FIPS), a set of standards published by the National Institute of Standards and Technology (NIST) for use by non-military United States government agencies and by government contractors.If you enable this policy setting, Outlook runs in a mode that complies with the FIPS 140-1 standard for cryptographic modules. This mode requires the use of the SHA-1 algorithm for signing and 3DES for encryption.If you disable or do not configure this policy setting, Outlook does not run in FIPS-compliant mode. Organizations that do business with the United States government but do not run Outlook in FIPS-compliant mode risk violating the U.S. government's rules regarding the handling of sensitive information.For more information about FIPS, see FIPS - General Information at http://www.itl.nist.gov/fipspubs/geninfo.htm

This policy setting controls whether Outlook displays the "Add Signature Services" menu item. If you enable this policy setting, ... This policy setting controls whether Outlook downloads files attached to Internet Calendar appointments. If you enable this ... This policy setting controls whether Outlook executes scripts associated with custom forms or folder home pages for shared ... This policy setting controls whether Outlook executes scripts that are associated with custom forms or folder home pages ... This policy setting controls whether Outlook is required to use FIPS-compliant algorithms when signing and encrypting messages. ... This policy setting controls whether Outlook is the default program for e-mail, contacts, and calendar services.If you enable ... This policy setting controls whether Outlook prompts users before executing a custom action. Custom actions add functionality ... This policy setting controls whether Outlook requires digital signatures on all outgoing e-mail messages.If you enable this ... This policy setting controls whether Outlook requires labels on S/MIME signed messages.If you enable this policy setting, ...