Last month, Microsoft issued a reminder about Distributed Component Object Model (DCOM) hardening. For those unaware, Microsoft made these changes against a Windows DCOM Server Security Feature bypass, a vulnerability tracked under "CVE-2021-26414".

Today, the company has released some additional resources regarding this. Microsoft has updated its support page about the matter which now includes availability dates for the various error events across various Windows operating systems. These include Servers, Windows 10, and Windows 11.

The full list is given below:


In case you are wondering what these error events are meant to signify, Microsoft explains that these will help identify the applications that can have compatibility issues after the DCOM security hardening changes are placed. You can find more details on the official support page (KB5004442) here.