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Release Date:



OS Build 10240.16854

This update includes quality improvements and security fixes. No new operating system features are being introduced in this update. Key changes include:

  • 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 caused sign in to temporarily fail after a password change.

  • Fixed issue that sometimes corrupts CompactFlash cards inserted into a card reader.

  • Fixed issue with losing network connectivity intermittently when roaming between Wi Fi access points.

  • Improved security in the Windows kernel.

  • Fixed issue with revised daylight saving time.

  • Fixed additional issues with Internet Explorer  11.

  • Updated security for kernel mode drivers.

  • Fixed additional security issues with the Microsoft Graphics Component, remote procedure calls, Internet Explorer  11, Microsoft Edge , Windows Journal, JScript, Schannel, Windows Shell, and Virtual Secure Mode.

For more info about the security fixes in this update and a complete list of affected files, see KB3156387.

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