Can you withdraw all available funds from a 401k plan that is thru your company? Then close your account?

I keep losing money in my 401k plan and am ready to call it quits. I am not sure if I can withdraw my money and syop paying into the plan.
Can you withdraw all available funds from a 401k plan that is thru your company? Then close your account?
If you withdraw it, you'll probably get nailed with taxes %26amp; fees.
Reply:you can stop paying in at any time. You can withdraw 100% of your money only if you quit, become disabled, or die.