Dear jackstorm3,
Are you logging into Steam using a new browser or Steam app? Here’s the Steam Guard code you’ll need to complete the process:
XTX6C
If you haven’t recently tried to login to Steam… from the device located at 223.207.64.175 (TH), someone else may be trying to access your account. You can view more info about this login attempt online.
If you suspect someone else may be attempting to access your account, please either:
Change your password immediately or
Lock your account online and then request Support assistance to regain access to your account.
Thanks for helping us maintain the security of your account.
The Steam Support Team