Hi ,
Try to use following command:
netsh wlan set hostednetwork mode=allow ssid=anything key=
Keep the key string empty.
Here are some similar threads discussed before:
Create hotspot without password
WiFi Hotspot without any Password?
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If it doesn't work, then there is no build-in way could create a hotspot without password in windows. You need to use some third-party tool to create the hotspot without passwrod.
Best Regards,
Candy
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