http://developers.de/blogs/damir_dobric/archive/2013/04/19/deployment-of-appxpackage-failed.aspxWhen trying to deploy sideloaded apppackage you might get following error: add-appxpackage : Deployment failed with HRESULT: 0x800B0109, A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider. (ExceptionenCommunityServer 2008 SP1 (Build: 30619.63)