The SmartScreen Filter in Windows 8+ is good, but allows some vectors of infection listed below:
a) You have got the executable file (BAT, CMD, CPL, COM, EXE, JS, JSE, MSI, VBS, VBE, WSF) using:
* the downloader or torrent application (EagleGet, utorrent etc.);
* container format file (7z, arj, rar, zip, etc.);
* CD/DVD/Blue-ray disc;
* CD/DVD/Blue-ray disc image (iso, bin, etc.);
* non NTFS USB storage device (FAT32 pendrive, FAT32 usb disk);
* Memory Card;
so the file does not have the proper Alternate Data Stream attached.
b) You have run the executable file with runas.exe (Microsoft), AdvancedRun (Nirsoft), RunAsSystem.exe (AprelTech.com), etc.
If You are executing executable files downloaded on NTFS hard drive by most popular Internet Browsers or from One Drive, then the SmartScreen Filter gives You very good protection against malware files (especially 0-day).
If the file is from another source, then simply upload it to One Drive (or mailbox) , and download again.
The SmartScreen gives more false positives than antivirus based on signatures, but this is fully compensated by better 0-day protection. It is worth to mention that Virus Total gives even more false positives. The main downside for inexperienced users is poor information about files blocked by SmartScreen - the best way to do then is accepting SmartScreen choices or asking more experienced people for help. If someone does not like it, then standard good antivirus (Eset, BitDefender, Kaspersky, Emsisoft, etc.) is a better solution.
@hjlbx
Tle last part of above post was not for You (You are obviously not an inexperienced user.)
