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vulnerabilities
Microsoft fixes Smart App Control broken by October Windows update
Microsoft resolved a known issue in which the October 2026 KB5127648 Windows 11 security update prevented some users from activating Smart App Control. The fix restored the feature's ability to function after the update installation.
Why it matters: Windows 11 administrators and users need to verify Smart App Control activation is working after applying recent patches to ensure this built-in security control is operational in their environment.
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- First seen by Cybersecurity Tracker