A Rollup Update has been released for Outlook 2016. This is a non-security update which contains the following documented improvement.
- This update changes the default signature hash algorithm for Secure/Multipurpose Internet Mail Extensions (S/MIME) messages and enables the administrator to manage them by using the following registry keys; UseAlternateDefaultHashAlg, DefaultHashOID and DefaultHashParam.
Note: This update can be installed via Microsoft Update and updates Outlook to version 16.0.5071.1000. This update does not apply to Perpetual and Office 365 based installations of Office 2016.