How to FailWhenDeferred uder WiX4?

[oleg-shilo]

The problem seems to be trivial.
Previously (WiX3) it required <CustomActionRef Id="FailWhenDeferred" /> from Util extension.

In WiX4 the documentation states that it has to be an element FailWhenDeferred.

And yet te compiler error says that this element is unexpected to be a child of Package element:

d:\temp\setup.wxs(21) : error WIX0005: The Package element contains an unexpected child element 'FailWhenDeferred'.

I do include Util extension:

wix build  -ext WixToolset.Util.wixext setup.wxs -o setup.msi

Is documentation wrong or it is something else.

[robmen]

Not enough context from your code to answer fully. My best guess is that you did not add the util namespace. FailWhenDeferred is not part of the wix namespace.

[oleg-shilo]

Sorry, you are spot on.

I did add the XML namespace but forgot to use the prefix:

<Wix xmlns="http://wixtoolset.org/schemas/v4/wxs" xmlns:util="http://wixtoolset.org/schemas/v4/wxs/util">
    . . .
    <FailWhenDeferred />

Changing it to <util:FailWhenDeferred /> did the trick.

Thank you.