In addition to Windows 11 August 2026 Patch Tuesday Updates, Microsoft has also released Windows 10 KB5120249 for users enrolled to ESU program. It focuses on fixing a frustrating File History backup problem while expanding Secure Boot certificate coverage. File History gets an important fix with the KB5120249 August 2026 Patch Tuesday UpdateThis security update fixes File History backups to SMB network shares. This should make scheduled File History backups more reliable for affected Windows 10 systems. Moreover, certificate deployment will continue through Windows Update across supported PCs and non-managed business devices over the coming months.