6.4.9850.0.fbl_bldsvc.140926-1857
| Major version | 6 |
| Minor version | 4 |
| Build number | 9850 |
| Build revision | 0 |
| Lab string | fbl_bldsvc |
| Build time | 2014-09-26 18:57:00 |
| Family | Threshold |
| Source type | Logging! |
| Source details | Retrieved from Windows Update logs of Windows 10 Technical Preview |