Windows 10 1909 and 1903 have received an additional patch that mainly addresses SMBv3. The build has one known issue in Windows Server containers.
If you have configured Windows update to automatic then the patch will be itself installed.
Table of Contents
KB4551762 Windows 10 1909 18363.720 and 1903 18362.720 Changelog
- The patch works on a Microsoft Server Message Block 3.1.1 protocol problem that offers shared access to printers and files.
Improvements and fixes
Windows 10, version 1909
KB4551762 security update for 1903 covers the quality improvements as follow –
- This build includes all the improvements from Windows 10, version 1903.
- No additional issues were documented for this release.
Windows 10, version 1903
Security update for 1909 contains the following quality improvements –
- The build contains the Security update to fix the flaws in SMBv3 (Microsoft Server Message Block 3.1.1).
The patch will only install additional fixes if you regularly installed earlier updates.
For more knowledge of the solved security vulnerabilities, navigate to the guide to Security Update.
Windows Update Improvements
Microsoft has pushed an update straight to the Windows Update client to enhance reliability. Device powered with Windows 10 and configured to install updates automatically, including Professional and Enterprises, will receive the most recent Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn’t apply to LTSE (long-term servicing editions).
KB4551762 Known issues
| symptom | Workaround |
| Windows Server containers having Patch Tuesday, March 2020 updates may throw issues with 32-bit processes applications. | For relevant directions on updating the containers, go to Windows container version compatibility. |
How to get this cumulative update
Before installing this update
As usual, Microsoft urges you to install the latest SSU before receiving KB4551762. SSU assists to increase reliability during the update process. Furthermore, it mitigates potential issues while installing the cumulative patch and applying security fixes.
If you have set the Windows Update to automatic, you will receive the most recent SSU KB4541338.
Windows 10 1909 and 1903 incorporates a common core OS and the same collection of system files. Consequently, the new features added by monthly quality update October 8, 2019, to Windows 10 v1909 are in a dormant state till now. These will continue to be dormant until they are enabled using an enablement package. This is a small plus master switch that easily activates Windows 10 1909 features.
Source – Release note.