Known Issue Rollback feature in Windows 10
How Known Issue Rollback works for consumers (end-users)
When Microsoft decides to rollback a bug fix in an update because of a known issue, configuration changes are made in the cloud. Devices connected to Windows Update or Windows Update for Business are notified of this change and it takes effect with the next reboot. According to Microsoft, the following is what happens next with your system:
How Known Issue Rollback works in the Enterprise
For a Known Issue Rollback, Microsoft will publish a specific Group Policy on the Download Center that can be used by IT Administrators to configure and apply a rollback policy within an enterprise. A link to the Group Policy is included in the Windows Update KB article and release notes as mitigations for a “Known Issue.” Microsoft further states: Essentially, devices that have opted to provide Microsoft with diagnostic data and specific information about which code-path is being exercised, this data from both the end-user and enterprise scenario helps Microsoft learn how well the rollback is succeeding in the ecosystem.
