[wix-users] Deferred Custom Action

[Nir Bar]

If you need to run the CA with admin rights, you have the MSI executed in machine scope- that is, elevated.
Additionally, the CustomAction element should have Impersonate="no" authored.


By definition, deferred custom actions run during InstallExecuteSequence.

If the return value of the CA isn't ignored, then a failure will cause the installation to fail.
You can also send a message from the CA code to pop an error message, using C++ MsiProcessMessage() or C# session.Message() 





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