Windows 10 update breaks VBA

The latest Windows 10 update has apparently introduced a serious bug in VBA (I have tested this in Office 2010 and Office 365 so probably applies to all versions). It now seems that if a variant contains an empty array, attempting to pass this to a second variant produces an error. See below;

[VBA]Sub test()

Dim x As Variant, y As Variant
x = Array()
y = x

End Sub

Sub test2(ParamArray pp())

Dim x As Variant, y As Variant
x = pp
y = x

End Sub

Sub test3()

test2
End Sub
[/VBA]

Both test1 and test3 produce Run Time error 5 Invalid Procedure Call or Argument. The second example - a ParamArray with no parameters supplied - must be a rather common situation so I suspect a lot of code is going to break... Does anyone know how to get Microsoft to do something about this?

Andrew

It has worked for the last decade or so. But it seems now it is a known problem. On Windows 10

https://support.microsoft.com/…ndows-10-update-kb4512508

see the last of the known issues. Also, for Windows 7. See

https://support.microsoft.com/…indows-7-update-kb4512486

And there are many reports coming in of this error.

Windows 10 [FONT="Calibri"]version 1903 build 18362.295 [/FONT]has the error. Earlier versions do not.

Microsoft know about the problem and are working on a fix.

Interestingly, an empty array generated by Array() produces the error. An empty array generated by Split("","|") does not.