DW20.exe the reason for the appearance

When you develop MS Office programs with. NET, you often encounter a debug window that pops up when office-related code throw ex.

Then there is a DW20.exe process running wildly, taking up a very high CPU, and maintaining a minute or so,

This is actually Microsoft Application error Reporting, which is used to send error reports when Ms app crashes.
Workaround: Go into My Computer-> properties-> System Properties-> Advanced-> Error Reporting, where settings are disabled, you can solve the problem!