Cumulative Update 21 für NAV 2013 R2

Cumulative Update 21 for Microsoft Dynamics NAV 2013 R2 (Build 41768)

MSDN-Blogeintrag:
Cumulative Update 21 for Microsoft Dynamics NAV 2013 R2 has been released

Da der Downloadserver derzeit wieder nicht erreichbar ist:
What to do when you cannot access a download?