KB4340917 update released for Windows 10 version 1803
Microsoft released KB4340917 for Windows 10 version 1803, the April 2018 Update, which brings the version of the operating system to 17134.191 after installation.
It is the second update that Microsoft released for the latest stable version of Windows 10 version 1803 after last week's release of KB4345421 which addressed several issues introduced by the July 2018 Patch Day.
Up until today, only Windows 10 version 1803 received a second cumulative update after Patch Tuesday this month. It is possible that updates for previous versions of Windows 10 will be provided by Microsoft eventually.
KB4340917 contains the following fixes and improvements according to the release notes:
- Fixed an issue with OpenType fonts that would not print in Win32 applications.
- Fixed a memory leak with DNS Response Rate Limiting in LogOnly mode.
- Addressed Remote App session issue that resulted in black screens when maximizing application windows on a secondary monitor.
- Addressed an IME issue with Japanese input in applications such as Microsoft Outlook.
- Addressed Quality of Service QOS parameters for Bluetooth connections related to peripherals.
- Fixed a SQL Server memory leak that would see memory usage grow over time when encrypting data using a symmetric key that has a certificate.
- Fixed an authentication issue in wireless PEAP environments with SSO that would send two authentication requests instead of just one; this could result in premature accuont lockouts. To enable the changes, admins need to create the Dword value DisableAuthRetry with the value of 1 on HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RasMan\PPP\EAP\26
- Fixed a roaming user profiles issue that caused the AppData\Local and AppData\Locallow folders to synchronize incorrectly during logon and logoff.
- Addressed a Push to Install service registration issue.
- Universal CRT Ctype family of functions improvements in regards to handling EOF as valid input.
- Fixed additional time zone information issues.
- Addresses an issue that causes devices within Active Directory or Hybrid AADJ++ domains to unexpectedly unenroll from Microsoft Intune or third-party MDM services after installing provisioning package updates (PPKG). This issue occurs on devices that are subject to the Auto MDM Enrollment with AAD Token Group Policy. If you ran the script Disable-AutoEnrollMDMCSE.PS1 as a workaround for this issue, run Enable-AutoEnrollMDMCSE.PS1 from a PowerShell window in Administrator mode after installing this update.
KB4340917 is available through Windows Update on systems with automatic update functionality enabled. You can run a manual check for updates to have it picked up immediately by pressing Windows-I, opening Updates & Security, and
The update is also available for direct download on the Microsoft Update Catalog website.
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