Microsoft Warns Windows 11 26H2 Users of 3 Persistent Bugs

3 articles · Updated · PCWorld · Sep 30

Windows 11 26H2 shipped with three known unresolved issues that can hit USB audio devices, domain-joined PCs and some virtual desktop environments after installation.
Microsoft’s release-health notes say affected USB Audio Class 1.0 devices may throw Code 10 or lose multichannel sound, while some Credential Guard-protected accounts may fail domain sign-in and some users may see black screens after login.
Those problems are not unique to 26H2—they also appear in Windows 11 25H2 and 24H2—but upgrading can still introduce them to PCs that were not previously affected.
Microsoft has labeled the issues mitigated and says it is still investigating fixes, without giving a timeline for when fully resolved patches will arrive.