I usually do not recommend downgrading security, but when using Microsoft new Edge browser to download a file, it's super slow on Windows 7 (which does not have a native MS Defender built-in). Therefore it's invoking your installed antivirus to invoke a scan, but this is super slow. This make this feature unusable. I can't wait a few minutes for a PDF to download, that I need to read now.
A good antivirus (MAKE SURE YOU HAVE A TOP ONE INSTALLED) will scan any file that hits the disk regardless, so I think this is overkill. The blocking of bad site, is also prevented with some AVs. And by good antivirus that is either Kaspersky, Bitdefender or Malwarebytes, all others provides are insufficient. Kaspersky has a browser plugin that does exactly same thing as SmartScreen.
What is SmartScreen ?
SmartScreen works by sending information about every application you download and run to Microsoft’s servers. If the application is something legitimate and fairly popular, like Google Chrome or Apple iTunes, Windows will allow it to run. If it’s something Microsoft knows is harmful, Windows will prevent it from running. But this is not entirely accurate, unsigned apps sometimes by app builders like me are not allowed to run either, but safe.
If the application is something SmartScreen isn’t familiar with, you’ll see warning message saying that Windows prevented an unrecognized app from starting. You can choose to bypass this message at your own risk, if you’re confident the application is safe.
Then, when you try to run it, Windows SmartScreen will check if the application is safe. If that’s all good, Windows Defender or whatever other antivirus you have installed will check whether the application is dangerous. SmartScreen is just another layer of protection.
The operating system level protection of antivirus works no matter where the application or file comes from.
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