The August 13, 2019 Windows Update KB451250 for Windows 7, 8.1 and 10 can cause many applications including At Your Service to stop responding or present an error “Invalid Procedure Call” when run. Microsoft is aware of this issue and has provided additional patches to fix the issue.
If you are installing a new version of At Your Service – Repair Centre, you may see the message “Windows Defender SmartScreen prevented an unrecognized app from starting. Running this app might put your PC at risk.”
You can safely run the installer with the following steps:
When exporting a form or report to a PDF document from within AYS, a message similar to the following appears: