automatic downloads of the type *_delta_Patch* with an Avast warning

I keep getting “file reputation warnings” from Avast for the general file types _delta_patch _ from http://download.windowsupdate.com. Avast recommends to abort the connection, which I do.
The files keep coming no matter how many times I select “abort”. My browser is Chrome. Are these malicious files? Can I stop them from being sent? Can I redirect them somewhere so they don’t appear on my screen? Any help appreciated.

Ed

Go to settinge>active protection>web shield and turn the option of warn at downloading files with bad reputation.

Or just allow these, these are Windows Defender Updates. :wink: