Note
The following information is about Microsoft Stream (Classic) which will eventually be retired and replaced by Stream (on SharePoint). To start using the newer video solution today, just upload your videos to SharePoint, Teams, Yammer, or OneDrive. Videos stored in Microsoft 365 the way you'd store any other file is the basis for Microsoft Stream (on SharePoint). Learn more...
Microsoft Stream (Classic) administrator support
If you're an administrator of your Microsoft 365 tenant, you can open a support ticket in the Microsoft 365 admin center.