<p>On Feb. 25, Microsoft announced that SharePoint 2013 Service Pack 1 was available at the Microsoft Download Center. The Office folks repeated the announcement on March 3 at the SharePoint Conference 2014 in Las Vegas. Last Thursday, with no notification that I can discern, Microsoft pulled the Service Pack and removed it from the Download Center.</p><p>SharePoint 2013 SP1 contained the usual security patch rollup, along with new security patches, 45 bug fixes, and a series of feature upgrades that, according to Microsoft, "address some of the most common scenarios faced when moving to the cloud," such as hybrid connection to OneDrive for Business in Office 365, support for Yammer, an easier method to replace the default newsfeed, and support for JSON Light in OData v3 requests.</p><p>On April 3, this announcement appeared on the Knowledge Base article attached to SharePoint 20013 SP1, KB 2817429:</p><p>We have recently uncovered an issue with this Service Pack 1 package that may prevent customers who have Service Pack 1 from deploying future public or cumulative updates. As a precautionary measure, we have deactivated the download page until a new package is published.</p><p><a href="http://www.infoworld.com/t/microsoft-windows/microsoft-yanks-sharepoint-2013-service-pack-1-kb-2817429-239969">Keep reading...</a></p>