This week’s practical priorities are straightforward: check whether your Windows version still receives security updates, finish the latest Chrome update, and have your IT team test older network sign-ins and Remote Desktop access after Windows patching. The details matter because the Windows changes affect different configurations.
For a business with 5–100 users, I would turn these into four assigned checks. At home, start with your Windows version and browser. You do not need to change business network settings on a personal computer just because they appear in a security headline.
Week reviewed: October 9, 2026, 2:15 a.m. through October 16, 2026, 2:15 a.m. Eastern. Sources checked at 2:15 a.m. Eastern on October 16, 2026. This is a selected recap of verified developments, not an exhaustive incident list.
1. Windows 11 24H2 Home and Pro reached the end of updates
What changed: Microsoft’s October 13 security release is the final monthly security update for Windows 11 version 24H2 Home and Pro. Staying on that version means losing future monthly security fixes. This is about a particular Windows version and edition, not the end of Windows 11 itself. Microsoft lists a different support schedule for Enterprise and Education, including 24H2 support through October 12, 2027. Microsoft’s Windows message center, supported Windows versions.
Who should check: Households and businesses still using 24H2 Home or Pro.
Your next step: Open Settings → System → About and record the edition and version under Windows specifications. Then check Windows Update for an eligible supported version. For a managed business computer, have IT confirm application compatibility and the upgrade plan before making changes.
A computer can still start normally after support ends. That is why “it works” is not a sufficient maintenance check. Keep a short list of machines awaiting an upgrade, with an owner and completion date.
2. Older Wi-Fi and VPN sign-ins may need attention after Windows updates
What changed: Beginning with the October 13 Windows security update, Microsoft changes an authentication default from auditing to enforcement. It blocks generation of NTLMv1-derived credentials for single sign-on when Credential Guard is disabled and the BlockNtlmv1SSO setting is not configured. Microsoft identifies Windows 11 24H2, 25H2 and 26H2, plus Windows Server 2025, in its guidance. Certain Wi-Fi, Ethernet and VPN connections using MS-CHAPv2 authentication may be affected. Microsoft’s authentication hardening guidance, KB5066470.
Who should check: Businesses with domain-connected Windows devices and older enterprise network authentication. This does not mean every home Wi-Fi password or VPN stops working.
Your next step: Ask IT to identify the authentication methods in use, test an updated device on each affected connection, and review authentication logs if sign-in fails. Agree on a migration plan for remaining dependencies.
This is a planned security change, first documented in 2025. Avoid treating a blanket security rollback as the standard fix. Any temporary mitigation should follow the vendor guidance and have a named owner and an expiry date.
3. A separate Remote Desktop issue can affect non-admin users
What changed: Microsoft added a known issue to its October Windows update notes on October 14. Non-admin users may fail to connect to a Remote Desktop host with Administrator protection enabled, receiving error 0xC000000D. The issue can follow the September non-security preview update or later updates. It primarily concerns managed enterprise devices, and is separate from the authentication hardening above. Microsoft was still working on a future fix at this recap’s cutoff. Microsoft’s KB5127648 known issues.
Who should check: Businesses that use Windows Remote Desktop hosts with Administrator protection enabled.
Your next step: Test access using a normal employee account. An administrator’s successful connection is not enough to clear this particular check. If it fails, record the error, host version and policy state for IT. Microsoft documents an administrator-managed temporary mitigation; evaluate that for the affected hosts rather than granting employees administrator access as a shortcut.
4. Chrome has another desktop security update
What changed: Google’s October 15 Stable update includes ten security fixes, including a critical issue. The announced desktop builds are 155.0.8059.84/.85 for Windows and Mac, and 155.0.8059.84 for Linux. Google says rollout happens over days or weeks. The notice does not establish active exploitation, so I am not presenting it as an attack already affecting your devices. Google’s Chrome release notice.
Who should check: People using desktop Chrome and the teams managing it.
Your next step: Open Chrome → Help → About Google Chrome, allow the update to complete and relaunch when prompted. Managed devices may follow an administrator’s update policy. Check the installed version against your operating system and release channel; a newer version may already be available to you. Google’s update instructions.
For a small office, ask for the number of devices still awaiting an update or restart. “Updates are enabled” does not tell you which machines have finished.
A short checklist to close the week
| Check | Assign it to | What to record |
|---|---|---|
| Find PCs still on Windows 11 24H2 Home or Pro | Household owner or IT | Edition, version and supported upgrade plan |
| Test older network authentication | IT or network provider | Connection tested, result and remaining dependency |
| Check affected Remote Desktop hosts | IT | A normal user’s result and any approved mitigation |
| Complete Chrome updates and restarts | Device owner or IT | Installed version, channel and outstanding devices |
If office access fails, first separate an internet outage from a sign-in or application problem. Our office internet outage checklist helps organize that first response and the information to give your provider.
For help managing these checks across a team, explore Business IT or book a conversation. For your own computers and household technology, see Managed Home IT and book a Home IT conversation.