Legacy Public Folders to Exchange 2013 migration tips

Reading Time: 6 minutes A couple of weeks ago I performed a Public Folder migration from Exchange 2007 (aka legacy) towards the modern Public Folders of Exchange 2013. As you may know, the traditional migration method using Public Folder replica's isn't available due to a radical redesign of the Public Folder architecture. Instead of dedicated databases, the hierarchy and data are now stored in mailboxes. The biggest benefit is that Public Folders can now be protected via a Database Availability Group, the downside is

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Office 365 users can't see free/busy of on-premises users

Reading Time: 2 minutes The past few days I was working on making an on-prem Exchange Server 2013 SP1 environment hybrid with the Office 365 tenant. You would expect that running the Hybrid Configuration Wizard (HCW) would be it, after setting all the requirements as they should. Unfortunately after running the HCW, Office 365 mailboxes couldn't access free/busy information of on-prem mailboxes. The other way round was functional. Enter troubleshooting mode! I will spare you the whole story and summarize it to the basics.

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