MS-220: Troubleshooting Microsoft Exchange Online Exam/Learning Path: https://docs.microsoft.com/certifications/exams/ms-220 Learning Path Module Week Troubleshoot Microsoft Exchange Online Troubleshoot problems with mail flow 1 Troubleshoot message filtering in inboxes and Microsoft Defender for Office 365 1 Troubleshoot compliance and retention issues 2 Troubleshoot encryption, auditing, and journaling 2 Troubleshoot desktop Outlook clients 3 Troubleshoot issues with mobile devices 3 Troubleshoot Exchange Online configuration issues 4 Troubleshoot hybrid and migration issues 4