Microsoft has confirmed that a bug in Windows 10 version 1607 and Windows Server 2016 is causing errors to appear in the Group Policy Editor.
In our September 2020 Windows Health Report, we reported that Windows 10 1607 and Windows Server 2016 users were experiencing errors when opening the Security Options MMC in Group Policy Editor.
Microsoft confirmed yesterday that the bug was introduced in September cumulative update KB4577015 and that they are working on a fix.
“Accessing the Security Options data view in Group Policy Management Editor (gpedit.msc) or Local Security Policy Editor (secpol.msc) may fail with error” MMC a detected an error in a snap-in. It is recommended that you stop and restart MMC “or” MMC cannot initialize snap-in “.
“This happens from the MMC window, when the console tree is expanded in the following order: select Computer Configuration, then Policies, then Windows Settings, then Security Settings, then Local Policies, then Security Options Microsoft explained.
For now, users can work around this bug by installing Remote Administration Tools on Windows 10 v1709 and later and remotely modifying Group Policy.
To install the tools, go to Settings > applications > Optional features > Add a feature then install the RSAT: group policy management tools functionality.