I can't connect to my wifi because it asks for a security key which I don't have I don't

I cannot connect to my wifi and when I attempt to connect, I'm asked for  the network security key.

If you are asking about your Wifi password (aka "Network Key"):

• If you are using a Comcast gateway, see https://www.xfinity.com/support/articles/view-change-wifi-password
• If you are not using a Comcast device please post the model number of your WiFi router or gateway.