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Windows Server 2012 R2 Datacenter Edition (x64) Patch Details

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Patch Name	Windows8.1-2012R2-KB3121261-v2-x64.msu
Patch Description	Update for Windows Server 2012 R2 (KB3121261)
Bulletin Id	MSWU-1783
Bulletin Title	System fails back to a host copy instead of an array copy or storages go down after LUN reset in Windows Server 2012 R2 (KB3121261)
Severity	Unrated
Location Path	Windows8.1-2012R2-KB3121261-v2-x64.msu
Bulletin Summary	This article describes issues in which a storage system fails back to a host copy instead of an array copy or storage systems go down after a LUN reset in Windows Server 2012 R2. An update is available to fix these issues. Before you install this update, see the Prerequisites section.
Superceding Bulletin Id	None
Patch Release Date	Feb 16, 2016
Affected Product Information Product Name Service Pack Name Windows Server 2012 R2 Datacenter Edition (x64) Windows Server 2012 R2 Gold (x64) Windows Server 2012 R2 Essentials Edition (x64) Windows Server 2012 R2 Gold (x64) Windows Server 2012 R2 Foundation Edition (x64) Windows Server 2012 R2 Gold (x64) Windows Server 2012 R2 Standard Edition (x64) Windows Server 2012 R2 Gold (x64) Update 1 for Windows 8.1 and Server 2012 R2 Windows 8.1 Update 1 Windows Server 2012 R2 Storage Server Standard Edition (x64) Windows Server 2012 R2 Gold (x64) Windows Server 2012 R2 Hyper-V Edition (x64) Windows Server 2012 R2 Gold (x64) Windows Server 2012 R2 Storage Server Workgroup Edition (x64) Windows Server 2012 R2 Gold (x64) Windows Server 2012 R2 Datacenter (evaluation installation) Edition (x64) Windows Server 2012 R2 Gold (x64) Windows Server 2012 R2 Server Standard (evaluation installation) Edition (x64) Windows Server 2012 R2 Gold (x64)

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