mscorlib in Windwos20H2

samaliy li 66 Reputation points

I have a Windows Form Application which is coded in C#.

Within these os version,i can log in my apl.
Windows7,Windows10 1803

But in Windows20H2,When i try to log in my apl,i get the error message like this.

How can i solove this exception?

Windows 10 Network
Windows 10 Network
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Network: A group of devices that communicate either wirelessly or via a physical connection.
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