Chrome doesn’t have that condition, downloads are saving normally.
These are programs which promote the software piracy.
From email a PDF file won’t download and saying that is a a virus and then deleted, It lets you do this with AVG switched off at the same time.
I’ve come across a few others using this issue but no answer.
If you're a developer you will find tools, headers and libraries allowing to write Windows console or GUI applications that make use of significant parts of the POSIX API.
Cygwin allows easy porting of many Unix programs without the need for extensive changes to the source code.