The July 2026 Windows security update is now available

🚨 The Signal: Microsoft released the July 2026 security update for Windows, including critical security fixes and hardening changes. Prompt installation is crucial to protect against known vulnerabilities and improve system integrity.

The Impact

All Windows users are affected by critical security updates, with a specific risk of system instability for certain Dell devices.

  • All Windows users: Reduced protection from cyber threats if updates are not applied.
  • Security teams: Increased attack surface and compliance risk without timely patching.
  • Dell users (specific models): Potential for system instability and performance issues post-update.
  • IT administrators: Need to manage update deployment and monitor for Dell-specific issues.

The Action

  1. Review the Windows 11 update history page for detailed release notes and known issues.
  2. Deploy the July 2026 security update to all supported Windows devices via your standard patch management solution (e.g., Microsoft Intune, SCCM).
  3. Identify and exclude affected Dell devices from immediate deployment of KB5101650 if using Windows 11, version 25H2 or 24H2.
  4. Monitor Microsoft communications for the resolution plan for affected Dell devices and deploy the fix once available.
  5. Verify successful update installation and system stability across your Windows fleet.

Domain: Intune · Impact: high · Workload: Other · Essential Eight: Patch Operating Systems · ISM: ISM-1407, ISM-1501, ISM-1621, ISM-1622, ISM-1623, ISM-1654, ISM-1655, ISM-1694, ISM-1695, ISM-1696, ISM-1701, ISM-1702, ISM-1877, ISM-1889, ISM-1902