You experience problems when you try to mount VHD files by using the Vhdmount.exe tool after you apply update 948515 in Virtual Server 2005 R2 SP1

Symptoms
You applyupdate 948515 on a computer that is running Microsoft Virtual Server 2005 R2 Service Pack 1 (SP1). After you do this, you experience problems when you try to mount Virtual Hard Disk (VHD) files by using the Vhdmount.exe tool.
For example, if you run the vhdmount /m vhd file command or the vhdmount /p vhd file command, you may receive the following error message:

The specified operation could not be completed as an unexpected error has occurred.
Resolution
This issue occurs because the Vhdstor.sys driver is not successfully upgraded to version 1.1.623.0 after you install update 948515.

When many SSL connections are established on a Windows Server 2008-based computer, the computer eventually stops responding because of a memory leak

Symptoms
Aftermany Secure Sockets Layer (SSL) connections are established on a Windows Server 2008-based computer, the computerstops responding.
If you debug this problem, the debug log indicates that the CngbandSslC tags areusing most of the available paged pool memory.
Resolution
This problem occurs because the Ksecdd.sys driver does not release the old SSL user context when renegotiation occurs. Each SSL user context uses some paged pool memory. Therefore, the system stops responding after the available paged pool memory is exhausted.