Server reboots after Windows Update

[Tim Hunter]

I have 8 servers all running Windows 2016. I have 3 of the servers that will automatically reboot after the Windows Updates complete. The other 5 servers always show "waiting to restart outside of active hours", but they never restart after active hours. I have everything setup in Group Policy so not sure why 3 of the 8 servers reboot and the other 5 never reboot. Where can I look to see what is causing the discrepencies? Thank you for any help.

[#2]

You can take a look here to compare differences.

Computer Configuration\Administrative Templates\Windows Components\Windows Update

[#3]

@Dave Patrick 

Yep, that is where I setup the Windows Update policies. Here is what I have:

[#4]

You can also take a look here;

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate

[#5]

@Dave Patrick 

Do I look in the registry of each individual server or just my domain controller where I have the Group Policy setup?

[#6]

I'd compare the settings of two different acting members.

[#7]

@Dave Patrick 

I checked all servers and they all have the same registry settings

[#8 · Accepted solution]

Some others to check here.

https://docs.microsoft.com/en-us/windows/deployment/update/waas-restart#registry-keys-used-to-manage...