To create a HotSpot in Windows you can use Windows internal tools.
Create:
netsh wlan set hostednetwork ssid=<name> key=<PASSWORT siehe keepass> keyUsage=persistent
After creating a hosted network you will get a new network device. Here you have to allow using the network connection for this new network device. To do so go to the properties of the current used network device. Then go to Share tab and choose the new created network device.
Start:
netsh wlan start hostednetwork
Check current HotSpot properties:
netsh wlan show hostednetwork
Here you can find a more detailed description in german.