Migrate MSI installers from WiX v3 to v5

[alexhass]

I suggest upgrading to WiX v5. Just learning the upgrade path, but there seems to be a convert feature that does a lot or at least most of it for us.

Why do I ask for this? It is about a new feature CloseApplications noted at https://wixtoolset.org/docs/fivefour/.

<InstallExecuteSequence> <Custom Action="$(var.Prefix)CloseApplications$(var.Suffix)" Before="InstallFiles" Overridable="yes" Condition="VersionNT &gt; 400" /> </InstallExecuteSequence>

If you deploy setups over existing setups while the application is running is causing serious issues. It ends with files not replaced or not all files installed. This causes a lot of troubles with system center / intune deployments.