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HomeTroubleshootingAll Products: Other IssuesInvalid procedure call or argument

3.33. Invalid procedure call or argument

Applies to: All Palisade Products

Disponible en Español:  ''Invalid procedure call or argument' (Español)''

After installing a Windows update, many actions in Palisade products now produce the error message "Invalid procedure call or argument."

With current maintenance, our users can update the software to our latest version 7.6.1 which fixes this problem. To upgrade your software go to:

Without current maintenance, please contact your sales representative at or follow the steps below:

Most significantly, this affects distribution fitting in @RISK, and optimizations in both @RISK or Evolver.  It also affects all Palisade products in other more minor scenarios.

This issue is caused by an update for Microsoft Windows (KB4512508) released on Aug-13-2019 which contains a bug. According to Microsoft, this issue was resolved with a new update that was released on Aug-30-2019 (KB4512941). The 'optional' update is available on Microsoft Update Catalog, Windows Update, Microsoft Update and Windows Server Update Services (WSUS). As with any 'optional' update, you will need to Check for updates to receive KB4512941 and install. For instructions, see Update Windows 10.

For some customers with Windows 7, 8, Windows server 2008 R2 and Windows Server 12 R2, the latest Windows update hasn't work, you can work around the problem by uninstalling the update from your system using these steps:

  1. Close all your programs.
  2. Go to Settings under the Start menu.
  3. Click on Update and Security.
  4. Click on the Update history link to list all the updates installed on your system.
  5. Click on Uninstall Updates.
  6. On the searching box located at the upper right corner, write KB4512508, select the update and click on Uninstall.
  7. Click yes to confirm the uninstall.
  8. Click Restart Now to reboot your computer and complete the task, the process may take a few minutes.

For reference, please check this Windows Central article: (last accessed: 2019-0815)


For Windows 10 version 1903 uninstall update KB4511553 

For Windows 10 version 1803 uninstall update KB4512501

For Windows 7 uninstall update KB4512506 

For Windows Server 2016 uninstall update KB4512517

For Windows Server 2008 R2 uninstall update KB4512486  

Last edited: 2019-09-19

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