Dear NVDA community,
It was brought to developers’ attention that some people were having issues upgrading to NVDA 2017.4, and turns out some were using Windows 7 RTM build. Thus the following community directive:
In order to use NVDA 2017.4 or later, Windows 7 Service Pack 1 or later is ABSOLUTELY required.
To find out which Windows release you’ve got:
If the build number is 7601 or higher, you’re all set. If it is lower than that:
In the next few weeks, some add-on authors will announce minimum supported versions of NVDA and Windows. For example, if you are using StationPlaylist Studio add-on, starting from version 17.12 stable, Windows 7 SP1 or higher is absolutely required.