Hello Windows Insiders, Last Wednesdays Microsoft Released Windows 10 Insider Preview Build 19640 to Windows Insiders in the Fast ring.

All Smooth upgrades her except 1 device had some strange 100% CPU load on the 1st logon, non-responsive taskbar, fixed after restarting explorer.exe

Happy Upgrading!!

General changes & improvements

• 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.

Known issues

• 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).

source: Windows Blogs