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Powershell Windows 10 update
Windows 10 upgrade woes
Start powershell as admin with unrestricted script policy
powershell -executionpolicy unrestricted
Install windows update powershell module
install-module pswindowsupdate
Get updates available for your pc
get-windowsupdate
Install updates available
install-windowsupdate
Or
Get updates and automatically install accept and reboot pc
get-windowsupdate -install -acceptall -autoreboot
One liner
powershell -executionpolicy unrestricted -command "install-packageprovider -name nuget -force -verbose; install-module pswindowsupdate -force -verbose; get-windowsupdate -install -acceptall -autoreboot -verbose"
Note:
Import module before get-windowsupdate if pswindowsupdate is already installed
import-module pswindowsupdate
Update 2021-07-22
Specify TLS 1.2 for the .net Security protocol
powershell -executionpolicy unrestricted -command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; install-packageprovider -name nuget -force -verbose; install-module pswindowsupdate -force -verbose; get-windowsupdate -install -acceptall -autoreboot -verbose"
References:
https://www.altaro.com/msp-dojo/powershell-windows-updates
https://superuser.com/questions/462425/can-i-get-more-information-on-what-windows-update-is-doing