The big question is what happens to non-Store apps. It is better to install desktop applications and drivers in normal mode, so that they continue to function normally even if the machine has switched to S Mode. This will help support older applications, while still providing the security S Mode has; You can still add new sandbox applications, but random sandbox applications on the network are not.
After all, this is exactly what S Mode should do. Apps on the Store are getting more and more ready to serve but still have a big functional gap with desktop applications. S Mode can be paralleled with carefully selected desktop software so that S Mode becomes more useful.
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