Microsoft has confirmed that the September 2025 security updates are causing Active Directory issues on Windows Server 2025 systems.
Microsoft has released Windows 11 KB5066835 and KB5066793 cumulative updates for versions 25H2/24H2 and 23H2 to fix security ...
If a Windows upgrade has ever gone sideways on you, you know how vague and unhelpful the error messages can be. Here are my go-to troubleshooting tricks when that happens.
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