Windows Vista build 5099
| Build of Windows Vista | |
 | |
| Version number | 6.0 |
|---|---|
| Build number | 5099 |
| Architecture | x86 |
Windows Vista build 5099 is a pre-Beta 1 build of Windows Vista, which is mentioned in build 5112's setup. In particular, it notes that you can only upgrade if running build 5099 or higher.