We have Jenkins master running on Ubuntu 14.04 with Windows 10 Pro and Mac OSX slaves. All seem to be working normally except for the Windows 10 slave. If ANY testcases fail (even just one) then the build/run is marked a failure. We have a pass percentage of 95% and an unstable percentage of 90% set for the build and this is working for everything EXCEPT Windows 10. The Windows 10 machine is using the WebStart jnlp file to connect to the master machine, the same as the Mac OSX box is using.