This session will help you understand Outlook protocols, known issues, troubleshooting tips & tricks for performance, hang, crash, and tools used for determining Outlook issues.

Timestamps
0:00 Intro
2:43 Outlook overview
4:40 Managing Outlook
7:20 Common issues
8:40 Preliminary checks/isolation
12:12 Troubleshooting tips
12:21 Connectivity issues
16:52 Sync issues
20:30 Calendaring issues
23:23 Search issues
28:06 Shared Mailbox/Public folder sync
31:25 Contact/Address book
34:14 Troubleshooting performance issues
38:24 Credential prompt
42:15 DLP Policy & tips
45:08 Installation & feature issues
48:45 Useful tools
48:55 SARA diagnostics

References:
Managing Office 365 Updates
https://docs.microsoft.com/en-us/sccm/sum/deploy-use/manage-office-365-proplus-updates

Delete a message stuck in Outbox:
https://support.office.com/en-us/article/video-send-or-delete-an-email-stuck-in-your-outbox-26d5d34a-4e5f-444a-a9e8-44db04a94dec

Using Meeting Analyzer tool
https://answers.microsoft.com/en-us/msoffice/forum/msoffice_o365admin-mso_exchon-mso_o365b/mailboxes-how-to-use-meeting-analyzer-to-collect/f88e8516-7f88-4f35-a7cb-d34a74fd9b1f

Troubleshooting Outlook search
https://support.office.com/en-us/article/troubleshooting-outlook-search-issues-2556b11f-f4d8-46be-b0a7-de33a3f4f066

Add-in registry location
https://docs.microsoft.com/en-gb/office365/troubleshoot/administration/office-add-in-not-loaded