I am using Windows 7 Home and Professional and Windows Live Mail.  Suddenly, I am unable to drag and email from inbox to storage file.  I must click on move and then click on folder.  Previously, I could drag a group of emails with the same subject or an individual email from my inbox list to one of my storage folders which was a much quicker way.  The only change in my software was a Word update that I was prompted to do.  I have not upgraded to Windows  10.