Microsoft postpones enforcement of the Windows 8.1 Update migration deadline until June 10. The deadline change was the third in the past month, following an earlier extension for business users and a surprise update on May 1 for Windows XP. Microsoft will issue eight security updates for Internet Explorer, various versions of Windows and Office on Tuesday. Businesses that rely on WSUS (Windows Server Update Services) to obtain and deploy patches have until August 12 to migrate. Microsoft declined to comment when asked whether the extension was linked to the problems voiced by customers in the support forum.”]