Windows update error 0x80070057

[Electrically]

Also, now all my microsoft apps ask for admin privileges and are from unknown publishers apparently. sfc /scannow doesn't work, error message is something about system update and restarting PC, but this doesn't work. Does nothing. I am on Windows 10 Pro Insider Preview Evaluation copy build 20175.rs_prerelease.200717-1340

The main problem here though is I can't update my laptop. Surface Laptop 3.

[#2]

@Electrically 

Hi,

at this point and given all the problems you're experiencing, I suggest performing a Reset from Windows settings.

try to choose to delete everything from Windows installation drive (C:\)

and preferably use the cloud download option.