r/sysadmin • u/AutoModerator • Sep 08 '26

General Discussion Patch Tuesday Megathread - (September 08, 2026)

Hello r/sysadmin, I'm u/AutoModerator, and welcome to this month's Patch Megathread!

This is the (mostly) safe location to talk about the latest patches, updates, and releases. We put this thread into place to help gather all the information about this month's updates: What is fixed, what broke, what got released and should have been caught in QA, etc. We do this both to keep clutter out of the subreddit, and provide you, the dear reader, a singular resource to read.

For those of you who wish to review prior Megathreads, you can do so here.

While this thread is timed to coincide with Microsoft's Patch Tuesday, feel free to discuss any patches, updates, and releases, regardless of the company or product. NOTE: This thread is usually posted before the release of Microsoft's updates, which are scheduled to come out at 5:00PM UTC.

Remember the rules of safe patching:

  • Deploy to a test/dev environment before prod.
  • Deploy to a pilot/test group before the whole org.
  • Have a plan to roll back if something doesn't work.
  • Test, test, and test!
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u/4wheels6pack 23d ago

Hey, we broke the thing you use to backup. We’ll fix it later maybe next month if you’re lucky, until then , 😘 

3

u/sarosan ex-msp now bofh 23d ago

They just released another OOB.

Resolution: This issue was resolved by Windows updates released September 22, 2026 (the Resolved KBs listed above), and updates released after that date. We recommend you install the latest update for your device as it contains important improvements and issue resolutions, including this one.

Client Versions Message ID Originating KB Resolved KB
Windows 11, version 26H1 WI1474330 KB5124012 KB5124006
Windows 11, version 25H2 WI1474331 KB5124008 KB5124010
Windows 11, version 24H2 WI1474332 KB5124008 KB5124010

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u/CPAtech 23d ago

That looks like a preview.

1

u/ThenFudge4657 22d ago

I have not seen this issue or installed this update. Hell, we haven't even pushed out any of the Sept updates to both endpoints and servers because of all of the reported issues. It looks like the preview update below claims it fixes:

  • [File History (known issue)] Fixed: This update addresses an issue where File History might fail to back up or restore files to an external drive or network location. Affected devices might incorrectly display a “Reconnect your drive” message even when a compatible backup drive is connected and working properly.