Windows Server 2003 SP1 addresses, among other things, known vulnerabilities within Windows Server 2003 by tightening the authorization needed for some services and disabling others. This is a good thing, but deployment of SP1 without proper testing and an eye toward reported incompatibilities could wreak havoc on production systems. Following are some of the most potentially problematic issues that have been reported after deployment of SP1. For a comprehensive list of application regression issues, go to Microsofts online Knowledge Base at www.support.microsoft.com/?scid=kb;en-us;896367&spid=3198.
Exchange Server 2003 users will lose Microsoft Outlook Web Access mailbox access located on an Exchange Cluster. Microsoft has provided a workaround for this issue at go.microsoft.com/fwlink/?LinkId=37488.
System management tools such as Hewlett-Packard Co.s HP Systems Insight Manager and Dell Inc.s OpenManage will not work with SP1. Shops running Windows Server 2003 should wait until an update is available before deploying SP1 on production servers.
System Management Server 2003 has had issues with SP1 that require resetting DCOM permissions and enabling remote WMI (Windows Management Instrumentation).
Issues have been reported with Citrix Systems Inc.s Citrix MetaFrame client connectivity.
Small Business Server 2003 shops should not install the version of SP1 now available via Windows Update. Microsoft will provide a dedicated service pack for SBS 2003 this month.
Next page: Best practices.