13. August 2015 12:16
A few days ago Microsoft released another Windows Update that require multiple restarts during the installation.
This time it is KB3075222 which is for Windows 7 SP1 and Windows Server 2008 R2 SP1.
Microsoft has updated their article about these updates here
In SP1 for ConfigMgr 2012 R2 there should be code that can handle multiple restarts during a task sequence but it has turned (as discussed here) out that this is not working on Windows 7.