Rayler :
Not the update installation, it's the update download.
If it's whilst your on the PC and downloading in the background, it will be stuck at 0% because you have no internet.
Out of curiosity, why do you want to stop them? But you can stop automatic downloads by going into your internet and network settings, clicking on your WiFi / Ethernet connection and activating 'Metered Connection'.
To physically pause an update download, there's no 'simple' way to stop them. You'd have to use CMD
- net start wuauserv
- net start bits
- net stop dosvc