We’re also excited to announce that we have added additional capabilities and checks to the Sync-ModernMailPublicFolders.ps1 script, which is used to synchronize mail-enabled public folders from Exchange Server to Exchange Online.
The following are some of the improvements in Sync-ModernMailPublicFolders.ps1:
Supports Modern authentication as well as multi-factor authentication (MFA)
Exchange 2010 public folder migrations to Exchange Online continue using only basic authentication since Exchange 2010 doesn’t meet the requirements to support modern authentication. You still must have basic authentication enabled for remote PowerShell on your Exchange Online tenant to migrate legacy public folders to Exchange Online directly from Exchange 2010. Please complete those migrations before October 2022!