Microsoft has resolved a significant compatibility issue that previously blocked Windows 11 24H2 upgrades due to USB scanner connection problems. The bug, which affected devices using eSCL (eScanner Communication Language) protocol, including standalone scanners, multi-function printers, fax machines, and modems, has been successfully addressed through the KB5048667 cumulative update.

The issue initially surfaced when affected devices failed to properly transition from eSCL to USB mode, preventing scanner driver compatibility. In response, Microsoft implemented a temporary safeguard hold to protect users from potential upgrade-related problems.

Key Updates:
– The compatibility block (ID 54762729) will be lifted in the coming days
– Users should install the latest security update containing the fix
– A 48-hour waiting period may be required after installing KB5048667
– Device restart can expedite the upgrade process

Current Windows 11 24H2 Upgrade Restrictions:
– Systems with incompatible Intel Smart Sound Technology (SST) audio drivers
– PCs running outdated Google Workspace Sync installations
– Devices experiencing conflicts with specific Ubisoft games

Users can now proceed with Windows 11 24H2 upgrades using the Windows 11 Installation Assistant or Media Creation Tool once the safeguard hold is removed from their devices.