Windows Update KB4571756 Triggers Error 3221227010 for Ansys Electronics Products

On September 7, 2020 Microsoft released a Windows update KB4571756, which may cause the Ansys electronic products to fail with the Error:

3221227010 at ‘reg_ansysedt.exe’ and ‘reg_siwave.exe’ registration.

This is the error message, users would see if they right-mouse-click and run the following file as administrator:

C:\Program Files\AnsysEM\AnsysEM20.2\Win64\config\ConfigureThisMachine.exe

To resolve this issue, here are the steps we recommend users take:

  1. Revert the updates.
    1. If the issue is not resolved or something your IT won’t let you do, continue to the next steps.
  2. Set an environment variable that turns off the driver that is causing the error. 
    1. Use windows search and type “system environment” and click on “Edit the system environment variables”
    2. This opens the “System Properties” tool
    3. Go to the “Advanced” tab
    4. Click on “Environment Variables…” at the bottom
    5. In the System Variables window click on “New…”
    6. Create the following variable:

      Variable Value: 1
    7. Click OK 3 times to exit out of the tool and save your changes. 
  3. If the issue is still not resolved, there is one more step:
    1. Go to C:\Program Files\AnsysEM\AnsysEM20.2\Win64\config\
    2. Right-Mouse-Click on “ConfigureThisMachine.exe” and run as Admin. 

If these steps helped to resolve the issue, you will see the following info message when ‘ConfigureThisMachine.exe’ is run:

If this does not work, please contact your Ansys support provider. 

Video Tips – Two-way connection between Solidworks and ANSYS HFSS

This video will show you how you can set up a two-way connection between Solidworks and ANSYS HFSS so you can modify dimensions as you are iterating through designs from within HFSS itself. This prevents the need for creating several different CAD model iterations within Solidworks and allows a more seamless workflow.  Note that this process also works for the other ANSYS Electromagnetic tools such as ANSYS Maxwell.

ANSYS 17.2 Executable Paths on Linux

ansys-linux-penguin-1When running on a machine with a Linux operating system, it is not uncommon for users to want to run from the command line or with a shell script. To do this you need to know where the actual executable files are located. Based on a request from a customer, we have tried to coalesce the major ANSYS product executables that can be run via command line on Linux into a single list:

ANSYS Workbench (Includes ANSYS Mechanical, Fluent, CFX, Polyflow, Icepak, Autodyn, Composite PrepPost, DesignXplorer, DesignModeler, etc.):


ANSYS Mechanical APDL, a.k.a. ANSYS ‘classic’:

/ansys_inc/v172/ansys/bin/launcher172 (brings up the MAPDL launcher menu)
/ansys_inc/v172/ansys/bin/mapdl (launches ANSYS MAPDL)

CFX Standalone:


Autodyn Standalone:


Note: A required argument for Autodyn is –I {ident-name}

Fluent Standalone (Fluent Launcher):


Icepak Standalone:


Polyflow Standalone:

/ansys_inc/v172/polyflow/bin/polyflow/polyflow < my.dat







ANSYS Electronics Desktop (for Ansoft tools, e.g. Maxwell, HFSS)