KB4284822

• Addresses an application performance degradation issue in operating system functions. This degradation locks and frees large blocks of memory (such as VirtualLock and Heapfree) after installing KB4056892 and superseding fixes.

• Addresses performance regression in App-V that slows many actions in Windows 10.

• Adds a new MDM Policy, “DisallowCloudNotification", for enterprises to turn off Windows Notification traffic.

• Changes the music metadata service provider used by Windows Media Player.

• Addresses an issue with the placement of text symbols in right-to-left languages.

• Addresses an issue with editing web password fields using a touch keyboard.

• Adds a Group Policy that provides the ability to hide recently added apps from the Start menu.

• Updates the Segoe UI Emoji font to use a water gun to represent a pistol emoji.

• Addresses a reliability issue with resuming from hibernation.

• Addresses an issue where SmartHeap doesn't work with UCRT.

• Addresses an issue to ensure that Windows Defender Application Guard endpoints comply with regional policies.

• Increases the user account minimum password length in Group Policy from 14 to 20 characters.

• Addresses an issue that causes sporadic authentication issues when using Windows Authentication Manager.

• Addresses an issue where an Azure Active Directory account domain change prevents customers from logging on.

• Addresses an issue that displays unnecessary “Credential Required” and “Do you want to allow the app to access your private key?” messages. This issue occurs when running a Universal Windows Platform (UWP) application.

• Addresses an issue that causes the LSASS service to become unresponsive, and the system needs to be restarted to recover.

• Addresses an issue where client applications running in a container image don't conform to the dynamic port range.

• Adds a new registry key that prevents access to the Internet using WWAN if a non-routable ethernet is connected. To use this new registry key, add IgnoreNonRoutableEthernet” (Dword) on HKEY_LOCAL_MACHINE\Software\Microsoft\Wcmsvc using regedit, and set it to 1.

• Adds a new registry key that allows customers to control access to the Internet using WWAN without using the default connection manager. To use this new registry key, fMinimizeConnections” (Dword) on HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\WcmSvc\Local using regedit, and set it to 0.

• Addresses an issue that prevented ISO/DVD mounts and eject from working using VM settings and Powershell because of menu transition issues in VMConnect.

• Addresses an issue where restarting the Hyper-V host with Hyper-V Replica (HVR) enabled could cause replication to stop. It may also require a manual restart to resume the replication from a suspended state. The replication state should be normal after the Hyper-V host/VMMS is restarted.

• Addresses an issue that might cause the Mitigation Options Group Policy client-side extension to fail during GPO processing. The possible errors are “Windows failed to apply the MitigationOptions settings. MitigationOptions settings might have its own log file” or “ProcessGPOList: Extension MitigationOptions returned 0xea.” This issue occurs when Mitigation Options have been defined using Group Policy, the Windows Defender Security Center, or the PowerShell Set-ProcessMitigation cmdlet.

• Addresses an issue that causes a connection failure when a Remote Desktop connection doesn’t read the bypass list for a proxy that has multiple entries.

• Addresses an issue where Windows Defender Security Center and the Firewall Pillar app stop working when opened. This is caused by a race condition that occurs if third-party antivirus software has been installed.

• Addresses an issue that causes Task Scheduler tasks configured with an S4U logon to fail with the error, "ERROR_NO_SUCH_LOGON_SESSION/STATUS_NO_TRUST_SAM_ACCOUNT".

• Addresses an issue in which Wi-Fi credentials must be entered each time a device restarts and tries to reconnect to Wi-Fi using Group Policy-distributed Preferred Network Profiles.

• Addresses an issue that caused devices that installed KB4103727 (May 8, 2018 update) to become unresponsive at the device's OEM logo before starting Windows. Before installing this update, a power cycle is required for the affected devices to recover.