Windows updates on all OS looking to microsoft for updates and not at WSUS set by GPO.

[hospitalScott]

Hi, all of our desktops and servers (windows 7, windows 10, server 2008 - 2016) are trying to check for updates causing our internet connection to have no bandwidth. The entire environment is run from WSUS and are set by GPO. We have a large VDI and XenApp infrastructure and the windows update service is disabled and turned off. We are seeing these windows OS's trying to check for updates as well, we can tell this by looking at our firewall logs source and destination. We have tried disabling all updates via reg keys and this also has not stopped the OS from trying to reach out to the internet for updates.

HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\WindowsUpdate
Key: DisableWindowsUpdateAccess
HKEY_LOCAL_MACHINE\SYSTEM\Internet Communication Management\Internet Communication
Key: DisableWindowsUpdateAccess
HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\WindowsUpdate\AU
Key: NoAutoUpdate

Wondering if anyone can help?

Thanks

Scott

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