If you know anything about PKIs, read this paragraph if you want, if not skip. after rifling through not-so-helpful SO/MS Connect/etc postings, i was able to glean that the digital signatures on some of the sub-packages were failing validation. Here's the deal: i was setting up TFS build agent on corporate server with all kinds of security lock down (including access to internet) from an MSDN subsription VS2015w/U3 ISO (unpacked). I apologize up front: this is not going to directly answer the OP's question, but when i searched around for 'a setup package is either missing or damaged' while trying to offline-install (from unpacked ISO) VS2105 on my (corporate, internet-starved) build server, there were lots of others with same problem with very little help, and this was the top 1 google hit for that dreaded error message. I had to reference all 4 files above in order to get it to install. Now, go back to the installer and browse to the 'known folder' to locate the file you just downloadedĭownloading these files and selecting it in the Please provide a location. Though it worked for me in IE11 - StealthrtĢ.Download the file from one (or all) of the links below -> to a 'known folder': I got it to work - when it asks you to locate 'preparation.exe' orġ.Open Chrome NOT Internet Explorer - for some reason IE doesn't work (at least for me). exe file in run as administrator so you may want to as well.

Though I did add the VC_redist x86/圆4 downloads to the list.

This is from the page HERE and is not what I came up with myself. I may have found the correct walkthrough to get this working.

Visual studio 2015 update 3 download