This session encompasses an overview of the Office 365 and Exchange Online Admin Centre, different recipient types in Exchange Online, Mailbox permissions, and Mailbox recovery scenarios.

Timestamps:
00:00 Intro
01:10 Office Admin Center
04:58 Adding Domain to Office 365
12:15 Exchange Admin Center
14:18 Fixing Provisioning error related to Archive Guid Mismatch
22:54 Changing User License assignment
24:31 Mailbox permission
28:05 RBAC roles
32:35 Outlook Web App policies
36:56 Mailbox recovery
38:55 Mailbox States

References:

Provisioning Issues:
https://blogs.technet.microsoft.com/exovoice/2016/11/07/how-to-fix-office365-user-provisioning-issues-that-are-generated-by-faulty-exchange-attributes/

Mailbox Permission
https://social.technet.microsoft.com/Forums/msonline/en-US/cfaa151f-d11a-4f25-ba96-8b87316811c0/automapping-a-shared-mailbox-not-working-everyone-in-cloud-full-permissions

Full Access Delegation not working - 'cannot expand the folder':
https://answers.microsoft.com/en-us/msoffice/forum/msoffice_outlook/full-access-delegation-not-working-cannot-expand/d1b61e58-3bb8-4bdf-a04f-e5d3c43835ab

Overview of delegation in an Office 365 hybrid environment:
https://docs.microsoft.com/en-us/exchange/troubleshoot/delegates/overview-delegation-office-365-hybrid

Permissions in Exchange hybrid deployments:
https://docs.microsoft.com/en-us/Exchange/permissions

Outlook Web App policies
https://docs.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/outlook-on-the-web/outlook-web-app-mailbox-policies
https://docs.microsoft.com/en-us/powershell/module/exchange/set-owamailboxpolicy?view=exchange-ps

Mailbox Recovery
https://docs.microsoft.com/en-us/exchange/troubleshoot/user-and-shared-mailboxes/mailbox-recovery-in-exchange-online