Error

ANSYS AEDT will not launch and does not indicate any error messages.  After a reinstallation or product re-configuration, the following error can be seen.

 Error Text:

Machine configuration failed
ConfigureThisMachines.exe failed with error code 2:
reg_ansysedt.exe: ERROR: Error 3221227010
reg_siwave.exe: ERROR: Error 3221227010

Description/Cause

This error can occur after installing Windows 10 update KB4571756.   This associated windows update was first released on September 8, 2020.  Ansys is aware of the issue, and will likely resolve this problem in a release after 2020 R2, but that is unconfirmed at the time this article was written.  To determine if this update was installed on your computer you search the start menu for and open "View your update history".  

Solution

There are two possible workarounds.  The first is preferred and easily to implement.  Close ANSYS AEDT before performing either option.