This was answered by Micheal Niehaus on the patch management mailing list
If you are using express updates, it will only download the updated .NET 3.5 components, so the "reinstall" is more like "pick up the missing pieces" - it should be fairly small. Thanks, -Michael -----Original Message----- From: Brian Illner [mailto:brian.ill...@canal-ins.com] Sent: Monday, November 28, 2016 1:01 PM To: Patch Management Mailing List <patchmanagem...@listserv.patchmanagement.org<mailto:patchmanagem...@listserv.patchmanagement.org>> Subject: RE: [patchmanagement] KB3200970 and MDT Task Sequences Ah hah! We are indeed installing 3.5 afterwards, so that's more than likely it. Highly annoying that we have to install a CU to correct the local WSUS/MDT issue and then it installs again because of .NET BRIAN ILLNER | Canal Insurance Company 864.250.9227 864.679.2537 Fax -----Original Message----- From: Abbodii [mailto:abbod...@gmail.com] Sent: Wednesday, November 23, 2016 2:27 PM To: Patch Management Mailing List <patchmanagem...@listserv.patchmanagement.org<mailto:patchmanagem...@listserv.patchmanagement.org>> Subject: Re: [patchmanagement] KB3200970 and MDT Task Sequences Enabling .NET 3.5 feature (or some Server Roles) after installing the update would make WU offer it From: listsad...@lists.myitforum.com [mailto:listsad...@lists.myitforum.com] On Behalf Of Marable, Mike Sent: Thursday, December 22, 2016 6:15 AM To: mdtosd@lists.myitforum.com Subject: [MDT-OSD] MDT2013 Build Reinstalls Win10 CU a 2nd time? I'm working on a simple build task sequence in MDT 2013 U2. I've imported KB3206632 (the December Windows 10 Cumulative Update) into the console. I've also enabled the Windows Update tasks in the sequence and I'm running it multiple times. The first time I run it is the default "Windows Update (Pre-Application Installation)" action and it finds 3 items to install: Command Line Procesed Query=False Registered=False UpdateCommand=[IsInstalled = 0 and IsHidden = 0 and Type = 'Software'] Start Search... INSTALL - 1971370b-aa59-4ad3-8230-2364fd01e334 - Microsoft Silverlight (KB3193713) - 12 MB INSTALL - 202fbc3a-18b2-42ec-97d5-ead9bd7c80da - Windows Malicious Software Removal Tool for Windows 8, 8.1, 10 and Windows Server 2012, 2012 R2, 2016 x64 Edition - December 2016 (KB890830) - 45 MB INSTALL - 4fd2be75-3e47-47e0-9744-cc0668df90df - Definition Update for Windows Defender - KB2267602 (Definition 1.233.2933.0) - 133 MB Scan complete, ready to install updates. Count = 3 Begin Downloading... Begin Installation... Success! Please rerun WindowsUpdate to ensure machine is FULLY up to date. So far, so good. I then use an "Install Roles and Features" action to enable the DotNET 3.5 feature. I then install the Visual C++ runtimes and follow it up with another running of the Windows Update task. This second running then downloads and reinstalls the Windows 10 Cumulative Update: Command Line Procesed Query=False Registered=False UpdateCommand=[IsInstalled = 0 and IsHidden = 0 and Type = 'Software'] Start Search... INSTALL - b6fe6c4a-089b-43be-8cd8-ebaa394a9424 - Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB3206632) - 946 MB Scan complete, ready to install updates. Count = 1 Begin Downloading... Begin Installation... Success! Please rerun WindowsUpdate to ensure machine is FULLY up to date. Why does WU install the Cumulative Update a second time just because I enabled the DotNET feature? I've attached the full log. Mike Marable Microsoft Systems Engineer Lead Enterprise Device Engineering and Management MCPS, MCITP, MCTS, MCSA, MCSE, MS [ Profile<http://www.mycertprofile.com/Profile/5319166625> ] [ Blog<http://thesystemsmonkey.wordpress.com/> ] ---------------------------------------------------- "If there is no enemy within, then the enemies outside can do you no harm." -Proverb "It is never too late to be what you might have been." -George Eliot "Talent you have naturally. Skill is only developed by hours and hours and hours of beating on your craft." -Will Smith ********************************************************** Electronic Mail is not secure, may not be read every day, and should not be used for urgent or sensitive issues ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The information contained in this communication and all accompanying documents from Coilcraft may be confidential and/or legally privileged, and is intended only for the use of the recipient(s) named above. If you are not the intended recipient you are hereby notified that any review, disclosure, copying, distribution or the taking of any action in reliance on the contents of this transmitted information is strictly prohibited. If you have received this communication in error, please return it to the sender immediately and destroy the original message or accompanying materials and any copy thereof. If you have any questions concerning this message, please contact the sender.