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OSDOCS WMCO 4.21.2 Release Notes #118873

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OSDOCS WMCO 4.21.2 Release Notes #118873

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WMCO 4.21.2 Release Notes
Aug 25, 2026
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edit per stevsmit
Aug 26, 2026
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16 changes: 16 additions & 0 deletions modules/windows-containers-release-notes-10-21-2.adoc
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// Module included in the following assemblies:
//
// * windows_containers/wmco_rn/windows-containers-release-notes.adoc

:_mod-docs-content-type: CONCEPT
[id="windows-containers-release-notes-10-21-2_{context}"]
= Release notes for Red Hat Windows Machine Config Operator 10.21.2

Issued: August 2026

The components of the Red Hat Windows Machine Config Operator (WMCO) 10.21.2 were released in https://access.redhat.com/errata/RHBA-2026:TBD[RHBA-2026:TBD].

[id="wmco-10-21-2-bug-fixes"]
== Bug fixes

* Before this update, the SSH connection between the WMCO and a Windows node would terminate when the WMCO rebooted the node after a configuration update. As a consequence, the WMCO incorrectly treated the SSH disconnection as a reboot failure, preventing the Windows node from completing required reboots. With this release, the reboot validation process is modified to ignore SSH termination errors and instead verify a successful reboot by using explicit node reachability checks and the SSH reconnection. As a result, Windows nodes successfully reboot upon node configuration changes. (link:https://issues.redhat.com/browse/OCPBUGS-98229[OCPBUGS-98229])
2 changes: 2 additions & 0 deletions windows_containers/wmco_rn/windows-containers-release-notes-past.adoc
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Expand Up @@ -11,4 +11,6 @@ You can review the following release notes to learn about changes in previous ve

For the current {productwinc} release notes, see "Red Hat OpenShift support for Windows Containers release notes".

include::modules/windows-containers-release-notes-10-21-1.adoc[leveloffset=+1]

include::modules/windows-containers-release-notes-10-21-0.adoc[leveloffset=+1]
2 changes: 1 addition & 1 deletion windows_containers/wmco_rn/windows-containers-release-notes.adoc
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[role="_abstract"]
This release of the Windows Machine Config Operator (WMCO) provides bug fixes for running Windows compute nodes in an {product-title} cluster.

include::modules/windows-containers-release-notes-10-21-1.adoc[leveloffset=+1]
include::modules/windows-containers-release-notes-10-21-2.adoc[leveloffset=+1]