Microsoft AutoUpdate 3.1.1 was released on June 10, 2015. This article describes improvements in Microsoft AutoUpdate 3.1.1.
AutoUpdate fixes a problem in which temporary downloads are not deleted from the disk after installation succeeds. In some cases, this causes multiple gigabytes of temporary files to accumulate, taking up valuable disk space. After you apply this update, you should restart your computer to delete any lingering temporary files.