We have recently added/verified another domain to Office 365 and would like to Federate it. As of this moment Azure AD is reporting:
Domains Verified for Directory Sync: 2
Domains Configured For Single Sign-On: 1
The instructions for "Configuring An Existing Customer Domain For Single Sign-On" gives me the command:
Convert-MsolDomainToFederated –DomainName domainname.com
My concern is Microsoft's statement in their article which states: "It’s best to perform a conversion when there are the fewest users, such as on a weekend, to reduce the impact on your users."
They don't exactly say or describe what that "impact" will be!
1. Does anyone know what this "impact" will be?
2. Will this at all affect existing users that are currently logged in via the initial federated domain?
3. Does this change require any additional changes with Azure AD Sync or within On-Premise ADFS?
Any insight or help would be greatly appreciated!