Kaspersky is worse than any virus. Slows down PC, makes it unusable. Always gives issues with fresh builds. It is better to avoid it and use built-in Defender. At least it does not make you wait forever for no reason.
Which was release over a week ago. Is it that hard comprehend? It's not like you got the build on 5/6/16. Stop assuming things and just wait. Builds are coming out faster than the same time last year. We've been getting 2 to 4 builds a month. Instead of 1 to 2 builds a month.
Karspersky is heavy but is effective. MSE may be lighter (not so lighter) but does nothing. Surely Karspersky is better if you limit the choice between those two. But is better to use something like Nod32 or Avira if you want a decent antivirus.
FYI: Windows Defender definitions are currently not being updated by Microsoft. My current definitions are dated May 19, 2016 at 4:28 PM version 1.221.14.0. Nothing new found via Windows Update or manual Windows Defender Update tab.
Really liking the new android ability to see missed called and able to reply to sms\Facebook msg without opening a app. Also nice to have android apps notification showing up in action center.