Microsoft have release Update Rollup 2 for Windows Server 2012 Essentials. The update fixes crashing problems with Office 365 integration, folder permissions issues and support for the Port Bonjour feature of the Mac connector.
I am planning to replace my old Windows Home Server setup with Windows Server 2012 Essentials at some point.
Major issues that are resolved by this update
Assume that you have the Microsoft Office 365 Integration feature enabled on a Windows Server 2012 Essentials-based computer. After you install update 2781267, and then restart the server, the Office 365 integration service crashes.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2781267 Update Rollup 1 for Windows Server 2012 Essentials is available
Assume that you install update 2781267 on a Windows Server 2012 Essentials-based computer. When you change the user access level or folder permissions in the User Properties dialog box, a warning dialog box might appear, and the operation fails.
After you install update 2781267, you cannot enable Office 365 by using the following Windows PowerShell cmdlet:
Major improvement that is added by this update
Adds support for the Port Bonjour feature of Mac connector to Windows Server 2012 Essentials.