Tag Archives: “SBS 2011 Service Pack 1”

Update rollup for the core printing components in Windows 7, Windows Server 2008 R2 and Windows Small Business Server 2011 (SBS2011)

Microsoft have released an update rollup for the core printing components in Windows 7, Windows Server 2008 R2 and Windows Small Business Server 2011 (SBS 2011)

The following issues are resolved by this update rollup:

You can request and obtain the update rollup via Microsoft Knowledgebase article KB 2647753 http://support.microsoft.com/kb/2647753

32 Bit Applications that utilise NetBIOS API do not receive connection close notifications in Windows 7 64 Bit Edition, Windows Server 2008 R2 or Windows Small Business Server 2011

32 bit applications that utilise NetBIOS API do not receive connection close notifications in Windows 7 64 Bit Edition, Windows Server 2008 R2 or Windows Small Business Server 2011 and as a result they do not try to re-establish a session.  Restarting the application will re-establish the session and recover from the issue.

This issue occurs because when the Netbios.sys driver receives data the driver does not convert the Network Connection Block NCB structure from 64 bit to 32 bit when the session has been dropped.  A 32 bit application cannot understand the 64 bit NCB structure which is why the session cannot be re-established.

The Microsoft Knowledgebase article KB 2633667 provides further information on the issue and a Hotfix containing an updated version of the Netbios.sys driver that that corrects this particular issue http://support.microsoft.com/kb/2633667

Windows Server 2008 R2 and SBS 2011 RTM or SP1 – You may experience disk I/O performance issues with certain Intel Xeon Processors

You may experience disk I/O performance issues if your server contains an Intel Xeon Westmere-EX (10 Core) processor

This can occur because some of the I/O completion port objects are not cache-aligned. This behavior is what causes poor disk I/O performance.

You can resolve the issue by updating Ntoskrnl.exe and Ntkrnlpa.exe updated versions are available for download from http://support.microsoft.com/kb/2545635