Microsoft today released a new Windows 10 preview for PCs with mobile broadband improvements. This build is from the RS5 branch, which represents the Windows 10 update the company plans to release later this year. The next update will come sooner (although we still don’t have a date), from the RS4 branch.

Windows 10 is a service, meaning it was built in a very different way from its predecessors so it can be regularly updated with not just fixes, but new features, too. Microsoft has released four major updates so far: November Update, Anniversary Update, Creators Update, and Fall Creators Update.

This RS5 build is for Windows Insiders who have chosen the Skip Ahead option, meaning they continue to receive builds from the RS_PRERELEASE branch. Only a small subset of Insiders can opt into Skip Ahead, as Microsoft still needs testers helping with RS4.

Microsoft wants to enhance the Windows networking stack by introducing a more reliable network driver model. This build includes an improved Mobile Broadband (MBB) USB class driver, but it’s not the default one. If your PC supports mobile broadband (it has cellular connectivity), you can try setting the new driver as the default (Device Manager => Network Adapters => Generic Mobile Broadband Adapter or xxxxx Mobile Broadband Adapter => Right-click => Update driver => Browse my computer for driver software => Let me pick from a list of available drivers on my computer => Generic Mobile Broadband Cx Net Adapter => Next).

Once you’ve restarted, try your cellular network by turning off Wi-Fi and disconnecting any ethernet cables. Microsoft will…