In Windows management, best practices are guidelines to configure a server as defined by experts. For example, it is considered a best practice for most server technologies to keep open ports that are required for the technologies to communicate with other networked computers and also block unused ports. Whereas best practice violations, even very important best practice violations, are not necessarily problematic, they indicate server configurations that can result in poor performance, poor reliability, unexpected conflicts, increased security risks, or other potential problems.
Note This update was revised on October 23, 2012 to apply to Windows Server 2008 R2 Service Pack 1. If you have previously applied the original version of KB 977239 update, no further action is needed. If you have not previously installed this update, you should apply this update.