Hello Ralph,
We use GPO to push the msi. Slack standalone 4.0.0
and use this capture in Vmware UEM (DEM)
# This Flex config file references to the Slack application.
# DirectFlex is configured and enabled (on the DirectFlex tab) to import personal settings
# when slack is launched and to export settings when it is closed.
[IncludeIndividualRegistryValues]
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\com.squirrel.slack.slack
[IncludeFolderTrees]
<AppData>\Slack
[ExcludeFolderTrees]
<AppData>\Slack\temp
<AppData>\Slack\cache
<AppData>\Slack\logs