Microsoft started the rollout of the May 2019 Update for Windows 10 yesterday. The company announced earlier this year that it would improve the upgrade functionality to give administrators more control over the installation of new feature updates for the operating system.
The functionality landed in Windows 10 version 1803 and version 1809 yesterday as well with the release of the cumulative updates KB4499183 and KB4497934.
The two preview updates for Windows 10, the official release will be on the June 2019 Patch Tuesday, June 11, 2019, introduce new features and fix certain issues.
Among the new features is support for the new upgrading behavior. Microsoft notes:
[..] we are introducing functionality that allows you to decide when to install a feature update. You control when you get a feature update while simultaneously keeping your devices up to date. Feature updates that are available for eligible devices will appear in a separate module on the Windows Update page (Settings > Update & Security > Windows Update). If you would like to get an available update right away, select Download and install now.
Windows 10 administrators who consider upgrading to the May 2019 Upgrade from Windows 10 version 1803 or 1809 may want to install the May 21 patches first. It is unclear if they are prerequisites for upgrading these systems to Windows 10 version 1903, the May 2019 Update.
The two updates are already available on Windows Update. Note that it is necessary to run a manual check for updates to install these on Windows 10 systems, and that they are previews.
In other words: these are beta releases and it is not recommended to install them on production machines.
Make sure you backup important files and the system before you start installing any updates that Microsoft throws your way.
Here are the other fixes and changes that these two updates make and introduce:
KB4499183 for Windows 10 version 1803
Here are the fixes and improvements:
- Go back to a host browser from a Windows Defender Application Guard container.
- Fixed an issue that caused Internet Explorer to stop responding to requests.
- Fixed a looping redirects issue between Internet Explorer and Microsoft Edge.
- Updated wininet.dll to “prevent the re-creation of File Transfer Protocol (FTP) control sessions”.
- Fixed the loading of new icon files if icon files have bad formats.
- Japanese short date format improvements.
- Updated Palestinian Authority time zone information.
- Fixed a Group Policy issue that prevented desktop wallpapers from updating.
- Fixed a Bluetooth peripheral devices removal issue.
- Fixed an Event Log Service issue for log entries with apostrophes or single quote characters.
- Fixed an Azure Active Directory issue that occurs during authentication and may slow down the performance of apps.
- Fixed a Windows Server Update Services server downloading issue caused by Windows Defender Application Control policies.
- Fixed a remote desktop session disconnect issue when using third-party credential providers.
- Fixed an issue that may cause a temporary KRB_AP_ERR_MODIFIED Kerberos sign-in failure in in certain applications and services.
- Fixed an ActiveX controls installation issue through proxy servers.
- Fixed sign-ins to fail with “Incorrect Username or password” when using an empty or null password and Windows Defender Credential Guard.
- Fixed an issue that caused Microsoft Office and other apps to prompt for a password after changing a user account password on hybrid Azure Active Directory joined systems.
- Fixed a BranchCache using more disk space than assigned issue under certain circumstances. Microsoft recommends that admins run netsh branchcache flush to fully address the issue after patch installation.
- Fixed event 7600 in the Domain Name System server event log containing unreadable server names.
- Fixed a Network File System share access issues.
- Fixed an issue that caused servers needing to restart because the system nonpaged pool consumed too much memory.
- Fixed NumLock not working properly in a Remote Assistance session.
- Addressed an issue with the “Allow uninstallation of language features when a language is uninstalled.” Group Policy.
- Fixed Error 0xc000026b when users sign out.
- Fixed an error that caused the Windows Event Log service to stop working.
- Fixed an issue that caused rendering to stop working for svg elements.
- Preboot Execution Environment issue (longstanding). Workarounds are available.
- Cluster Shared Volume issue with certain file and folder operations. Workarounds are available.
KB4497934 for Windows 10 version 1809
Here are the fixes and improvements (shares most issues with KB4499183, only unique ones listed):
- Fixed an issue in Microsoft Edge that would hide PDF annotations.
- Addressed an issue that removed UserRights policies from all users in a security group when removing a device from a mobile device management (MDM) server or Microsoft Intune deleted a UserRights policy.
- Fixed a Microsoft Surface Hub sign-in issue with Azure Active Directory accounts.
- Fixed a Bitlocker issue that prevented it from encrypting data drives if “Enforce drive encryption on fixed data drives” was enabled in the Group Policy.
- Fixed a login time recording issue.
- Morocco time zone information update.
- Japanese Era fixes.
- Fixed servers not accepting SMB connections anymore.
- Fixed scrollLeft issue in Internet Explorer.
- Addressed an issue with Assigned Access deployments (formerly Kiosk Mode) that prevented a user from logging on to an Assigned Access profile.
- Addressed an issue that prevented a Generation 2 virtual machine from starting on a Windows Server 2019 Hyper-V host.
- Same as KB4499183 plus the following ones.
- Print error “Your printer has experienced an unexpected configuration problem. 0x80070007e” when printing using Microsoft Edge or Uwp apps. Workaround is available.
- Asian language pack error “0x800f0982 – PSFX_E_MATCHING_COMPONENT_NOT_FOUND”. Workaround is available.
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