- Improved reliability in a number of areas including Cortana, Bluetooth, Shell, Internet Explorer 11, Microsoft Edge, Miracast, and USB.
- Fixed memory leak that occurs when opening a portable document format (PDF) form multiple times.
- Fixed issues with text alignment for right to left languages in Internet Explorer 11 and Microsoft Edge.
- Fixed issue that affected Bluetooth function when a PC resumes from sleep.
- Fixed issue where user accounts weren’t locked out after a number of failed sign in attempts.
- Fixed issue with revised daylight saving time.
- Fixed issue that sometimes corrupts CompactFlash cards inserted into a card reader.
- Fixed issue that caused recorded video to be lost when answering an incoming call on some phones.
- Fixed issue that could result in unexpected battery drain while the phone screen is off.
- Fixed additional security issues with kernel mode drivers, remote procedure calls, the Microsoft Graphics Component, Internet Explorer 11, Microsoft Edge, Windows Shell, Windows Journal, Virtual Secure Mode, Schannel, and Jscript.
- Fix for a problem that could result in unexpected battery drain while the phone screen is off.
- Improvements to the update system to prevent phones getting into a state where attempting to take an update may lead to errors 0x800f081f or 0x80070570.
- Fix for a problem that caused some phones to finish the initial setup wizard with an incomplete set of app tiles on the Start screen.
- Improvements to the reliability of USB-C connections.
- Improvements to Cortana, including a fix for a problem where music playback would not resume after dismissing an incoming text, and a problem with Quiet Hours not setting automatic rules for every day.
- Fix for a problem that could result in the phone to hang or restart when visiting certain web pages in Microsoft Edge.
- Fix for a problem that caused recorded video to be lost when answering an incoming call on some phones.
- Improvements for reliability of internet connection sharing (ICS) and tethering.
- Fix for a problem that caused the navigation bar to overlay and hide part of the screen for some apps on certain phones.