Microsoft has released Update Rollup 1 for Microsoft Windows XP. An update rollup is a cumulative set of hotfixes, security patches, critical updates, & updates that are packaged together for easy deployment. Update Rollup 1 for Windows XP is a single package that includes many previously released critical updates for Windows XP. For additional information about the critical updates that are included in this update rollup, view the article in the Microsoft Knowledge Base. Download Now. I've updated our OS Updates accordingly to remove all now unnecessary seperate patches.