COM DLL no longer launching RRS feed

  • Question

  • We have a Windows Vista standalone application that launches a COM DLL (created in C#). This DLL stopped working last week.

    DLL is registered with regasm (another component is registered with regsvr32), and registrations are confirmed as successful. When launched, the DLL should displays a form. This has worked for many years with no issues. Users register the DLL during the installation. There have been no changes to the application.

    Last week (end of april 2015) a new set of Windows updates were pushed down to the users. DLL stopped launching on machines that installed the updates.

    What could be causing the issue, and what could be the workaround?

    Monday, May 4, 2015 4:38 PM