Block Windows 11 Upgrade

Anyone have a script to block windows 11 from automatically installing?
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Enjoy. Two easy reg entries. Not looking forward to the new Windows 8...
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@Jeff Lorenzen , Should the "TargetReleaseVersionInfo" be 21H1? My understanding is it will block any upgrade AFTER the listed version. So if you want to block Windows 11 (21H2), you would put 21H1 to ensure if doesn't upgrade to any version after 21H1. Is that correct?
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Same question as JE3
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JE3 is correct. According to the article below:
"If you want to stay on Win10 version 1903, for example, set this TargetReleaseVersionInfo registry key to 1903 and Microsoft won’t push you to 1909 or 2004 or 20H2. "
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@rodolfoberain and @Thomas Anderson
Since Windows 11 is 21H2 and Microsoft has released Windows 10 21H2, you will want to include a registry setting for "ProductVersion" too.
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\ProductVersion
Type = REG_SZ or String and the data is "Windows 10"
Edit: added my agent procedure
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Sorry, for some reason I'm not getting notifications from the exchange any more. Thanks. @JE3 and @Thomas Anderson for these updates. You are all correct.
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Any harm on running this registry change on PC's that have already been upgraded to Win11?
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Does this prevent the prompt to users that Windows 11 is available?
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Does this prevent the prompt to users that Windows 11 is available?
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@Allan Carson It has not prevented the prompt to Windows 11 for my users... so you still have to inform them to not upgrade... Microsoft is being very aggressive with pushing this. However, I have not added the "Product Version" line to the Agent Procedure yet. I'm adding it now and testing it. Thanks, @JE3.
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@Allan Carson I ran the Agent procedure on mine successfully. However, before I ran the procedure, I noticed I didn't have ANY entries at all. My Windows Update folder in the Registry was gone. I'm not sure how it got reset since I ran the Agent Procedure back in November. Did Microsoft reset it so it could push Windows 11??? Hmm 🤨
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