Fixes a problem that occurs when you try to restart or shut down a Windows Server 2008-based computer that is connected to an MPIO storage device. Occurs if the storage device contains paging files, after an MPIO path fails over and then fails back.

Fixes a problem in which Multipath I/O identifies different disks as the same disk in Windows Vista, Windows Server 2008, Windows 7, Windows Server 2008 R2, Windows 8, Windows Server 2012, Windows 8.1, and Windows Server 2012 R2.

In this scenario, an MPIO path failover occurs incorrectly. The expected behavior is that the Mpio.sys driver can handle the transient device errors and does not trigger the MPIO path failover operation.

You use Microsoft Multipath I/O (MPIO) to manage the storage device. The storage device is part of the cluster resources. All MPIO paths to the storage device fail, and then the paths recover after awhile. For example, you turn off the storage device, and then you turn it back on after awhile.

You connect a computer that is running Windows Server 2008 or Windows Server 2008 R2 to a storage device that is controlled by Microsoft Multipath I/O (MPIO). A failover occurs on the MPIO paths. In this scenario, the failover operation is unsuccessful. Therefore, you cannot use the storage device.

Fixes a MPIO issue that occurs when you remove a path of a storage device on a computer that is running Windows Server 2008 R2.

In this scenario, an MPIO path failover occurs incorrectly. The expected behavior is that the Mpio.sys driver can handle the transient device errors and does not trigger the MPIO path failover operation.

To apply this hotfix, you must be running Windows Server 2008 R2 or Windows Server 2008 R2 Service Pack 1 (SP1). You may have to restart the computer after you apply this hotfix. This hotfix does not replace a previously released hotfix.

You configure a computer that is running Windows Server 2008 R2 Service Pack 1 (SP1) to use Microsoft Multipath I/O (MPIO). You connect a storage device that is configured to use Asymmetric Logical Unit Access (ALUA) to the computer that has multiple active paths.

Fixes an issue in which you receive a Stop error message when you try to open the MPIO console on a computer that is running Windows Server 2008 SP2. This issue occurs after you remove all the paths to a SAN storage device.