How do I fix Error 101 on Steam?

How do I fix Error 101 on steam?

1. Locate the Power off button on the back of your router and press it.
2. Unplug the router power cable and wait for one minute.
3. Attach the power cable back into the router and turn it on.
4. Next, locate the Reset button on the router and insert a thin, long, and sharp object in the Reset hole.