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Updating Win10 CBB

Last Monday, I posted about a change in the Windows 10 Current Branch for Business (Win10 CBB) from Build 10240 to 10586.The very next day was Patch Tuesday, so Microsoft released a cumulative update. Thus, a new CBB was no sooner released than it got updated. Almost immediately, this raises the question of updating Win10 CBB.

Updating win10 CBB

There’s more to updating Win10 CBB than meets the eye!
[Source: Microsoft; click image to see full-size version]

The update in question is KB3177461. Looking it over, I noticed something missing. Here’s the text of that KB article:

This security update includes improvements and fixes in the functionality of Windows 10 and resolves the following vulnerabilities in Windows:

  • 3148531 MS16-037: Cumulative Security Update for Internet Explorer
  • 3148532 MS16-038: Cumulative Security Update for Microsoft Edge: May 10, 2016
  • 3148522 MS16-039: Security Update for Microsoft Graphics Component to Address Remote Code Execution
  • 3148541 MS16-040: Security Update for Microsoft XML Core Service to Address Remote Code Execution
  • 3148789 MS16-041: Security update for the .NET Framework to address remote code execution: April 12, 2016
  • 3143118 MS16-045: Security Update for Windows Hyper-V to address Denial of Service: March 8, 2016
  • 3148538 MS16-046: Security Update for Secondary Logon to Address Elevation of Privilege
  • 3148527 MS16-047: Security Update for Security Account Manager Remote Protocol to Address Elevation of Privilege
  • 3148528 MS16-048: Security Update for CSRSS to Address Remote Code Execution
  • 3148795 MS16-049: Security Update for Internet Information Services (IIS) to Address Denial of Service

Windows 10 updates are cumulative. Therefore, this package contains all previously released fixes. 

If you have installed earlier updates, only the new fixes that are contained in this package will be downloaded and installed on your computer. If you are installing a Windows 10 update package for the first time, the package for the x86 version is 314 MB and the package for the x64 version is 661 MB.

Look carefully: there’s no mention of the Current Business Branch. Nothing in the article tells us it relates to updating Win10 CBB. That means that simply tracking and reading KB update text doesn’t tell us a CBB-related update has been released.

What Updating Win10 CBB Really Means Is…

Finally, I get more of the TechNet article on “Windows Update for Business.”  It talks about “Deployment and validation groups” early on. I now understand that a validation group is not just for assessing update impacts on production PCs. A validation group also tells us an update relevant to the CBB has occurred. That’s because Windows Update for Business “knows” which version of Windows is running, and which newly-released updates apply.

This mandates setting up at least one non-production PC for Windows 10 Update for Business. Apparently, it’s the only way to keep track of what’s going on, update-wise. Now I understand: there’s more to updating Win10 CBB than working to your own update schedule. You must also keep up with updates coming from Microsoft along the way, too. Go figure!

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