PowerShell v6.2 preview 3 install issue – PowerShell v6.2 preview 3 is now available from https://github.com/PowerShell/PowerShell/releases but you may notice a probloem if you install over the top of PowerShell v6.2 preview 2.
When you click on the icon to start preview 3 the console will flash open and then immediately close.
The fix is to either uninstall preview 2 before installing preview 3 OR install preview 3 over the top of preview 2 and immediately rerun the preview 3 installation selecting the repair option. The install will work through and then PowerShell v6.2 preview 3 will work.
The underlying cause is understood and hopefully will be fixed in a later release
under: PowerShell v6