The following update has been released today, in SBS 2003 R2 you might see this problem if you install the FSRM (File Server Resource Manager) feature on the server.
Make sure you check the KB and get the update from the download site directly if you have FSRM already installed, remember that new updates may not be working through automatic updates and WSUS on your R2 server if that is the case.
Security Advisory 922582 – Today we are announcing the availability of an update that does not address a security vulnerability, but is a high priority for customers in keeping their systems updated. This advisory is primarily for customers running Windows Server 2003 R2. The update addresses the following issue: You may receive error code 0x80070002 when you try to update a computer running on Microsoft Windows that has a minifilter-based application installed. Only Windows Server 2003 R2 has a minifilter-based application installed by default. This error code could occur when updating using any of the following Microsoft tools:
· Automatic Updates
· Windows Update Web site
· Microsoft Update Web site
· Inventory Tool for Microsoft Updates (ITMU) for Microsoft SMS 2003
· Software Update Services (SUS)
· Windows Server Update Services (WSUS)
We encourage Windows customers, and primarily Windows Server 2003 R2 customers (And SBS R2 customers), to review and install this update. This update will be offered automatically through Automatic Updates. For more information about this issue, including download links for the available non-security update, please review Microsoft Knowledge Base Article 922582 .
Direct Link to Download: