[ANSWERED] Virus found

I tried to download EX-100, but my MSE refused: Virus found. What does that mean?

Hello,

im not really sure what MSE is but jpm got this alert with defender and solved it like this:

[You must be registered and logged in to see this link.]

its a false alert

MSE = Microsoft Security Essentials
The message occures with the newest update:

I downloaded EX-100 with deactivated virusscanner but after activating it again MSE deletet WinReducerEX100.exe. So, I have to decide to use Winreducer or MSE  :-(

I get the same which disaêar after downloading new virus signature ...