Microsoft has put its foot inside it (yet) again with a Windows 10 update, even though this time the update wasn't bugged - rather it was delivered to the wrong machines.

The update under consideration is KB4523786 that was pushed out alongside an optional cumulative update for Windows 10 May 2019 Update, and implements "quality improvements to Windows Autopilot configured devices".

Now, Windows Autopilot can be used to setup devices in a business environment, so that as Microsoft observes in the patch notes: "Windows Autopilot update is not placed on Windows 10 Pro or a later version when the system is not registered or configured for Windows Autopilot deployment. Windows Autopilot update is never offered to Windows 10 Home."

Except in this case, the KB4523786 update was pushed to Windows 10 Home PCs, and indeed Windows 10 Pro machines which aren't registered for Autopilot deployment.

So as Windows Latest observes, if you do happen to begin to see the 'Cumulative update for Autopilot in Windows 10 version 1903: October 22, 2019' displayed under Windows Update on your Windows 10 Home or Pro machine, don't do the installation.

However, Microsoft has now pulled the update, which means you shouldn't see it any more anyway.

No harm done

A member of Microsoft's InTune support team posted on Twitter to explain the situation as follows:

2/2 Once we became aware of the issue, we stopped distribution from the update. For those who have already installed the update, it will not affect you. If not, there's further action required. Hope this helps! #IntuneSuppTeam ^MSOctober 25, 2019

So even if you had previously installed this update, the good thing is it won't actually do anything bad for your PC (except find a little bit of drive space, and add a little extra clutter to the system, obviously).

A good number of everyone has uninstalled it, though, going by reports over the net, and haven't encountered any issues by doing this. That said, we haven't tried this, and you're obviously removing it at your own risk!

It's quite possible that Microsoft will push out an additional update to clear and remove the mistakenly issued KB4523786 itself, soon, for individuals who may not have even realized they've installed a pointless update.