Cannot sign in to Skype for Business 2016 when you register the domain as a vanity domain

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Applies To

Skype for Business 2016

This issue occurs when the domain name of the SIP user is registered as an Organizational ID (OrgID) and Microsoft account (MSA) domain.

Resolution

To fix the issue, install the April 4, 2017, update (KB3178717) for Skype for Business 2016.