An error occurred while creating the WEB proxy specified in the "System.net/defaultproxy" configuration section.

record it. There are a number of reasons for this problem. 3 of the most common cases are:

1. permissions issues. Add the username to the Administrators group and try it.

2. network problems. Reset Network connection: Log on with the administrator account for CMD, and then enter the Netsh winsock reset reboot to try it out.

3. system problems. Re-install the system to try

You can try this method, which I solved by this method, the reload system is too much trouble.

An error occurred while creating the WEB proxy specified in the "System.net/defaultproxy" configuration section.