Win10 annual upgrade release! Multiple content updates

The official version of Windows 10 released on July 29 this year is Build 10240, also known as Threshold 1.
While the release of these three months, Windows 10's internal testing has been updated. A few days ago, Microsoft selected Build 10586 as the Threshold 2 Fall Update, which was officially launched to the Insider Express Edition members early this morning.
As mentioned before, this update brings a lot of UI interface improvements, Edge browser improvements, icon optimization and new applications for Messaging/Skype, etc., but it should be noted that this is all cumulative. A collection of patches.
The more intuitive difference is that the color of the title bar of the desktop application has changed, and the look and feel of the application has a better consistency.
Fixed issue:
- Any audio playback volume (such as music playback from Groove apps and video playback from movies and TV apps) will be reduced by 75% when the action center pops up, and for a while, now this The problem has been fixed.
- On Surface Pro 3, pressing the power button should cause Surface Pro 3 to sleep instead of turning it off.
- We fixed a random strobe problem in the disksnapshot.exe command prompt window reported by Windows internal participants.
- Windows should now be able to remember your last login type. For example, if you log in with a PIN, the next time you will be prompted to log in with a PIN instead of another login method.
- On the Edge, if the page doesn't scroll to the top, the preview will turn black and the page preview label will turn black. This has been fixed.
- Smaller devices such as the Dell Venue 8 Pro, which turn on the screen rotation mode at startup, or when the virtual mode screen size setting is larger than the actual screen size, a blue screen will appear during the upgrade. This has been fixed.
- Download apps and games from the store should now be more stable.
Known Issues:
- When upgrading from one Windows 10 Insider Preview Build to another, Skype messages and contacts in the Messaging + Skype app will disappear. Navigate to "C:UsersAppDataLocalPackagesMicrosoft.Messaging_8wekyb3d8bbweLocalCache" in the Explorer and delete or rename the "PrivateTransportId" file to retrieve the Skype messages and contacts. After deleting or renaming the "PrivateTransportId" file, enter the Skype video app, exit Skype and log back in.