Exchange Online PowerShell – Retiring Search-Mailbox Cmdlet (Apr 1, 2020)

Microsoft is retiring MailboxSearch cmdlets on Apr 1, 2020. So, you can’t use those cmdlets to create In-Place eDiscovery and In-Place Holds. 

Whats New:

You can use New-ComplianceSearch and New-CaseHoldPolicy in the Security and Compliance Center.