Response from Microsoft representative on 9/16/2015: "The reason was found to be bug in VS2015 which caused file filters to work improperly when Installsheild setup project was one of the projects in a solution. Solution suggested is to unload InstalSheild setup project temporarily while working with other projects. " "In reference to case you have raised with Microsoft. (SR# 115082013064013 Solution Explorer Filters Don't show file). I got response from product team. They don’t have plan to fix this bug in upcoming update for Visual Studio. However, this bug will be fixed in a future release of Visual Studio and exact time cannot be committed as of now." So nothing to do but wait now. -Paul ... View more

From Microsoft tech support: Subject: RE: [REG:115082013064013] Solution Explorer Filters Don't show file Initial Response I have discussed this with our Escalation team and confirmed this to be a bug in VS2015. This scenario involving a third-party product may not have been tested before VS2015 release. I will raise a bug with Product Group. Please note that based on product groups priorities they may fix this in next update or can delay fix. I will update once I get any update from product team. Till then please use the alternative solution of unloading setup project temporarily. Thank you for pointing out this issue to Microsoft. I surprised that this is a bug, considering that InstallShield is built-in to VisualStudio 2015 as the preferred deployment solution. -Paul ... View more