@caio-augusto, I read this at the bottom of this page:
wuauclt is no longer available with Windows 10.
You can use usoclient.exe instead.
Parameters are /StartScan, /StartDownload, /StartInstall
I tried it and it doesn't give any output, but I assume it works. I'll have to try it when my PC needs updates. I tried it on a couple of mine but both are up-to-date so it didn't do anything.