Q:

Does windows 8 support Visual Source Safe?

Does windows 8 supports visual source safe (or the other way around?)
Aka, can you install visual source safe running windows 8?

A:

My advice is, don't go closer to Visual SourceSafe than you can spit a rat.  VSS has NEVER worked right. Data corruption is all too common. When I worked as an independent consultant to Microsoft in the late 1990's and spent some of my time in Redmond, I found out MS's little secret.  Virtually none of the Microsoft development projects used their own VSS.  Their internal source code control in the early '90s was a customized version of the old RCS file-based system.  They then bought source code rights to Perforce and created a customized version of Perforce for their own use.  Now, at least since Visual Studio 2012, they only officially support their own Microsoft Team Foundation Version Control (TFVC) and Git.  Support for only those two has been built into VS 2012 and newer IDEs.
Again, even the Microsoft programmers joke about VSS being a "code destruction device."  If you already have a honking lot of projects in VSS 6 (which IIRC was built in 1998 and discontinued in 2006), you might want to track down the upgrade to VSS 2005, which is rare, but at least "supported" to whatever degree until sometime in 2017. I also have no idea if either is compatible with Windows 10 (I've installed 6.0 on Windows 7) I'm not sure it's any better, and Microsoft makes it very hard to find full or upgrade downloads of VSS 2005 on their site, but I recall seeing a link for it on one of the MS forums.  Search for it.
OTOH, if you are not welded to VSS and don't want to use either TFSC or Git, Subversion (standalone) is a very good alternative (CVS is a dead issue and is not being supported). My current client has development teams using either Git or SVN for their .NET (yuck) projects.
DISCLAIMER: My personal experience (as StackOverflow wants to see for opinion posts) covers 40 years as a top-level software design and development consultant for primarily Fortune 50 companies, during which I have used extensively just about every major COTS and open-source make utility, bug-tracker, and version-control system available.  I was a primary beta-tester for the original PVCS (Polytron Version Control System), later bought by Borland. I have also written a proprietary text delta-based version control system for Dow Jones in the early '90s.

