Overview
- Microsoft began a staged rollout of Windows 11 version 26H2 late Tuesday night, distributing it as a tiny Enablement Package that activates functionality already delivered on devices this year.
- An Enablement Package is a small file that flips a switch to enable code already present on PCs so installation is fast and usually needs only one restart.
- Microsoft has documented three known issues: some USB Audio Class 1.0 devices lose sound or show Code 10, certain domain-joined machines can fail interactive logins, and some virtual desktop sessions show a black screen after sign-in.
- Microsoft and partners say several failures appear linked to the recent cumulative update KB5124010; Microsoft has provided mitigations including enterprise Known Issue Rollback (KIR) and is targeting a permanent fix in the October cumulative update scheduled for Patch Tuesday.
- Users can get 26H2 via Windows Update (devices with 'get updates as soon as available' will get it first) or manually with ISOs and the Media Creation Tool, and administrators are advised to delay installation on affected systems until Microsoft confirms the issues are resolved.