When you have windows 10 in your environment and machines are configured with Windows Server Update Services. You should never configure Branch readiness level or tried to delay or defer feature upgrades or quality updates using group policy.
If you do that . The moment any one of these policies are configured, even if these are set to be “disabled”, a new behavior known as Dual Scan is invoked in the Windows Update agent. where windows will try to update from Online servers directly and from wsus. and you can see random clients getting feature upgrades.
Random clients will start getting feature upgrades in a windows environment like below. Causing inconsistent versions in the environment. when you have various clients computers using legacy applications. you never want to roll out something which you never tested.
Once you set these Policies to “Not Configured”
Windows Updates Registry – When any of the policies configured.
When all the policies set to Not Configured. Requesting the Windows 10 clients to talk to Speak to wsus only for upgrades and updates.
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