[DISCUSSION] Hotpatching for Windows Server 2025 (and Windows 11 24H2 - no subscriptions needed!)

Testing registry values again on VMware.
Hotpatch should now be available on both Windows 11 24H2 and Windows Server 2025 without the need for a subscription?

 

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registry tweaks worked.

 

Unfortunately I'm still getting KB5058411 (which is the non-Hotpatch cumulative update) on 26100.3915 client. Is the Enterprise SKU compulsory for it?

 

did you reboot after applying the registry tweaks?

 

Yes. Specifically, I've paused updates, then edited the registry and restarted, then resumed updates. After re-searching, I still get KB5058411. :/

 

You must use 26100.3775.

 

Just in time when no hotpatch this month

 

This is not working for me on WS2025, I already have VBS enabled (and it says it is), is anything else needed? I still get the normal patches

 

It seems this is also needed for WS2025.
reg add "HKLM\SOFTWARE\Microsoft\PolicyManager\current\device\Update" /v "AllowRebootlessUpdates" /t "REG_DWORD" /d "1" /f
reg add "HKLM\SOFTWARE\Microsoft\PolicyManager\current\device\Update" /v "AllowRebootlessUpdates_ProviderSet" /t "REG_DWORD" /d "1" /f

Now I see Enable Hotpatching when available in configured policies as well. Let's check back in two months for the next rebootless update

 

This is not required for the server. Before receiving the hotpatch, please ensure that the baseline update has been installed.

 

Which baseline update do I need to install now then?

 

2 months later...

2026-02 Security Update (Hotpatch capable) (KB5075942) (26100.32313)

Yet I still need to reboot, what would I need to get hotpatching? I have set all these hotpatch registry things.

 

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But not needing reboots is the only advantage of hotpatching. I've given up on it and reverted back to normal patching after april patch failed to install.