This article describes an issue that occurs when the port proxy interface is removed in Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2. You can fix this issue by using the update rollup in this article.
The Svchost.exe process that holds the IP Helper service and some other services crashes when the port proxy interface is removed with the command of netsh interface portproxy delete [parameters].
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 3156066 - Last Review: May 17, 2016 - Revision: 1
Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Standard, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Foundation, Windows 8.1 Enterprise, Windows 8.1 Pro, Windows 8.1, Windows RT 8.1