I’m also experiencing this issue. I’m attempting to install through the Epic Games Launcher and also am updated to Visual Studio 2015 Update 1.
If I attempt to install the prerequisites directly through the exe file and not through Epic Games Launcher I get a log file with the following at the end of it:
[2E70:26AC][2015-11-11T17:04:34]i301: Applying execute package: VC140_X86, action: Install, path: C:\ProgramData\Package Cache\BFB74E498C44D3A103CA3AA2831763FB417134D1\vcredist_x86.exe, arguments: '"C:\ProgramData\Package Cache\BFB74E498C44D3A103CA3AA2831763FB417134D1\vcredist_x86.exe" /quiet /norestart'
[2E70:26AC][2015-11-11T17:04:35]e000: Error 0x80070666: Process returned error: 0x666
[2E70:26AC][2015-11-11T17:04:35]e000: Error 0x80070666: Failed to execute EXE package.
[29D0:2B50][2015-11-11T17:04:35]e000: Error 0x80070666: Failed to configure per-machine EXE package.
[29D0:2B50][2015-11-11T17:04:35]i319: Applied execute package: VC140_X86, result: 0x80070666, restart: None
[29D0:2B50][2015-11-11T17:04:35]e000: Error 0x80070666: Failed to execute EXE package.
[2E70:26AC][2015-11-11T17:04:35]i351: Removing cached package: VC140_X86, from path: C:\ProgramData\Package Cache\BFB74E498C44D3A103CA3AA2831763FB417134D1\
[2E70:26AC][2015-11-11T17:04:35]i330: Removed bundle dependency provider: {31b49e1e-03f8-4a04-8faa-f6476d8fad02}
[2E70:26AC][2015-11-11T17:04:35]i352: Removing cached bundle: {31b49e1e-03f8-4a04-8faa-f6476d8fad02}, from path: C:\ProgramData\Package Cache\{31b49e1e-03f8-4a04-8faa-f6476d8fad02}\
[29D0:2B50][2015-11-11T17:04:35]i399: Apply complete, result: 0x80070666, restart: None, ba requested restart: No
For reference if it also helps in any way:
Windows 10 64bit (fully updated)
Visual Studio 2015 Update 1 with every option installed/updated
Visual Studio 2013 installed but unused