The October 2026 Windows security update is now available
Microsoft published this post on Windows message center.
1 version
Facts
- Microsoft id
the-october-2026-windows-security-update-is-now-available- Products
- Windows
- Feed
- Windows message center
- First captured by us
- (from our first import of this list)
- Microsoft last modified
- –
- Source
- Windows message center · open the original at Microsoft
Microsoft says
(Updated 10-13-2026 11:30 AM PT: Message updated to reflect availability of Windows 10, versions 22H2 and 21H2.)
What Microsoft changed
One version so far. If Microsoft edits it, each change shows here with what was removed and added.
First version we captured ·
The text as we first saw it
Seen by us · Microsoft's page
Related changes
Mentioning the same Microsoft ids
- KB5124008: 2026-09 B update of 2026-09-08
- Mouse customization is reset on non-English Windows devices · Resolved KB5124008
- Desktop background settings are lost or reset on some devices · Resolved KB5124008
- Microsoft Teams and Outlook might fail to launch on ARM-based devices · Resolved
- Remote Desktop Services might stop responding after Sept. 2026 security update · Resolved
- Host folder shares might be unavailable in Hyper-V-based Linux VMs · Resolved
- USB audio devices might fail to start or produce no sound · Resolved
- Domain-joined devices might lose their secure trust relationship with the domain · Resolved
Last updated