CIU v2.0.3.9 Update 13.3 not working properly with Forza Horizon 3
 

CIU v2.0.3.9 Update 13.3 not working properly with Forza Horizon 3.
I guess thar is due to the fact that Appxmanifest.xml file is in a subfolder.
UniUWP_Launcher_V2.exe asks to be copied in the same folder as Appxmanifest.xml.
I think CIU needs again to be updated.
Forza Horizon 3 Structure:
AppFiles (folder)
DLC1 (folder)
DLC2 (folder)

My suggestion is that UniUWP_Launcher_V2.exe should be copied to the three mentioned folders.

Is Appxmanifest.xml in all three folders (AppFiles + DLC1 + DLC2) or only in AppFiles folder?

If it's only in AppFiles folder, then use the Workaround in CIU thread (read the info)

Yes, Appxmanifest.xml is in all three folders.

problem with FH3 and launcher v2 is that the launcher doesnt "autoregister" the DLCs proberly becaus eof the way DLC in folders .... better to use the "InstallApp.exe" for that.
Will probably do alternative V2.1 launcher that in case of game not being registered by the OS will either say to InstallApp.exe or launches it by itself (as that one registers DLCs properly)

So only need to register the 3 appxmanifest files?

That's no problem. Will send you a modified script later @GTX590.

in the end all of them , main game first and then both expansions .... but the CDX's appinstall also somehow modifies the dlc's appxmanifests before registering them
... and sadly I havent had time to research it in detail how to replicate it (might be easier just to use their file)

Well you could compare the original one and the "CDX modified" one and see where is the difference. It should be only marginal.