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Getting the error “unexpected error; quitting” in Win10 version 1903? Blame the latest cumulative update
Yet another bug in this month’s first cumulative update for Win10 version 1903, KB 4517389.
Our own Mark Busby described the symptoms:
After installing KB4517389 on these Windows systems, when opening 16-bit applications an error message is displayed “unexpected error; quitting” … After removing the update the application works fine once more.
An anonymous poster on AskWoody pointed to this Answers Forum post, which gives more details:
I have a Windows 10 Home 1903 32bit machine.
After installing the windows update KB4517389 any programs that were coded in Microsoft Visual Basic 3 no longer run and give the message ‘unexpected error; quitting’
This message appears to be part of VBRUN300.DLL
If I uninstall the update the programs work ok again.
I have tried running these programs as administrator but this makes no difference.
Microsoft hasn’t confirmed the bug – and the only fix appears to be uninstalling the latest patch.