Windows 10 build 19640 rolls out to Insiders on the Fast ring

General improvements are the name of the game.

What you need to know

• Microsoft launched a new build for Windows 10 Insiders on the Fast ring today.
• The build doesn't contain new features, but brings a couple of general improvements.
• This build is rolling out via Windows Update now as build 19640.

Windows Insiders on the Fast ring are being treated to a new build today. Microsoft shipped Windows 10 build 19640 to Insiders, bringing a couple of bug fixes and improvements along with it. There are no new features to check out, however.

Here's the full rundown of what's new in build 19640:

• Based on feedback, if your Downloads folder is synced to a cloud provider, we are disabling the option to have Storage Sense automatically clear out your Downloads folder on a cycle.
• We updated our login logic, so if your PC is set up so you need to type in your username when logging in, accidentally starting your username with a space will no longer result in an error.

And here's a look at the known issues in 19640:

• We're looking into an issue where some devices booting from eMMC storage bugchecked when resuming from hibernate.
• We're looking into reports of the update process hanging for extended periods of time when attempting to install a new build.
• We're working on fixing an issue for a future Insider Preview build where in Settings > Privacy, the Documents and Downloads sections show a broken icon next to their page name (just a rectangle).
• We're looking into reports that taskbar preview thumbnails aren't rendering consistently (showing a blank area).

If you're already enrolled in the Windows 10 Fast ring, you can grab build 19640 now via Windows Update. Otherwise, you can dive deeper into this build with Microsoft's full blog post.