Windows 10 cumulative update KB 3176934 breaks PowerShell

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#PowerShell #Windows10Windows 10 cumulative update KB 3176934 breaks PowerShell : Yesterday afternoon, Microsoft released KB 3176934 for those PCs running Windows 10 Anniversary Update. It’s the fifth cumulative update for version 1607 (three were released before the product rolled out on Aug. 2), and brings the build number up to 14393.82.

You can see the long list of official changes – primarily bug fixes – on the Windows 10 update history page. Anniversary Update customers also received an update to the “servicing stack” – the subsystem within Windows 10 that handles updates – in KB 3176936.

There was some hope that the cumulative update would fix one of the two widespread problems with the Windows 10 Anniversary Update that I talked about last week, but no such luck.

Based on reports as of very early Wednesday morning, it looks like the freeze problem is still there. In a Reddit thread devoted to the topic, poster zpoon says: “After restart I had it lock up on me within 3 minutes.”

Microsoft has closed off discussion about the freeze problem on the main Answers forum thread, so there’s nothing new there. But the original Reddit thread has been updated to reflect build 14393.82, and there’s no joy in Mudville. I haven’t seen any reports of a solution on the freeze front.

The second widely reported problem – that Anniversary Update broke Skype for those who use many popular webcams, including the Logitech C920 – doesn’t seem to have been addressed by the patch either.

The MSDN thread on the topic contains no news, just repeated remonstrations about Microsoft’s ability to test Windows updates with the Skype team. There’s also a new problem, specific to patch KB 3176934. The Windows PowerShell Blog reported last night that:

Due to a missing .MOF file in the build package, the update breaks DSC. All DSC operations will result in an “Invalid Property” error. If you are using DSC from or on any Windows client, take the following steps: Uninstall the update if already installed…

If using WSUS, do not approve the update. Otherwise, Use Group Policy to set the ‘Configure Automatic Updates’ to ‘2 — Notify for download and notify for install’… A fix for this issue will be included in the next Windows update which is due out 8/30/2016.

DSC is PowerShell’s Desired State Configuration, a set of language extensions and commands that gives admins control over networked computers. We now have two examples of significant internal patching screwups with build 1607.