VB App doesn't run in some W10 computers

Nick Buckenham 41 Reputation points
2021-05-12T10:25:25.567+00:00

My VB sports results application, established and developed over many years, now runs in many W10 computers from the UK to Russia to Australia, but completely fails to start with no e.Exception.Message and no e.Exception.StackTrace for two key users in France and Italy, where the Startup form doesn't even show. The project is set to .NET 4.0.0.0

Setting my system to French and Italian fails to provide any clues, for me it always runs fine. Could this be their AV system blocking it? What can I do to trace what is causing this issue?

VB
VB
An object-oriented programming language developed by Microsoft that is implemented on the .NET Framework. Previously known as Visual Basic .NET.
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Accepted answer
  1. Sam of Simple Samples 5,516 Reputation points
    2021-05-12T17:08:41.907+00:00

    See Application page of VB project properties - Visual Studio. Do you have a handler for the UnhandledException event?


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  1. Nick Buckenham 41 Reputation points
    2021-05-19T09:41:28.233+00:00

    Final final comment - just discovered that the user still having this issue is running VMWare Workstation 15. This is apparently allowing my code to run to the point where a data file is read, then it crashes with the e.Exception.Message blanked. His setup won't run my subsequent .NET email reporting system either, it's a total washout. I don't know whether VMWare should avoid this, but I'm sure this is the culprit.

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