After a recent mandatory security update for Windows 11 caused disruptions, Microsoft has implemented a hotfix to resolve these issues. The problematic update, released on October 14, affected several systems, disabling mice and keyboards in recovery mode and network connections for locally hosted applications. Additionally, it led to problems with file previews in Windows Explorer.
The hotfix, designated as KB5070773, was issued on October 20 and aims to restore functionality to impacted devices. Microsoft acknowledged that this update rollout coincided with a critical moment for the company, as it had just discontinued official support for Windows 10.
In an advisory, Microsoft cautioned that Secure Boot certificates, essential for secured device booting, are set to expire in June 2026. This could potentially affect both personal and business devices that haven’t been updated in time.
Windows 11, which debuted in 2021, now claims nearly 50% of the desktop operating system market share. Meanwhile, Windows 10, despite no longer receiving support, still holds a significant 40% of market share among PCs.
To address immediate concerns, affected users are advised to check for any available updates and reboot their PCs, even if no new updates are visible. This process allows Windows to revert its code until the hotfix is properly implemented. Temporary solutions include modifying Windows Registry settings to help local apps regain network access, along with various workarounds outlined in user forums.
For more comprehensive details, you can visit the official Microsoft pages for the October 2025 update and Windows Server updates.