October 2026 for Microsoft admins: what changed on the 1st, and what ends on Patch Tuesday
last modified by Jan Holbo RasmussenNote
Updated 13 October 2026, after the release. This post went out the day before Patch Tuesday. It now says what actually shipped: 1,411 fixes, one of them for a flaw that is already being used in attacks, and one known issue with USB audio. The other sections are brought up to date as well.
Patch Tuesday was on 13 October, and this one was more than a batch of fixes. Several products got their last update on the same day, three things had already changed on 1 October, and a Secure Boot certificate expires six days later. Here is the month as a list, with what to check for each.
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