Hi there, Thanks for reaching out. Checking your profile in our system, we can confirm you currently only have a Steam account linked. To that point, are you attempting to set up Cross Save via [url=https://www.bungie.net/7/en/CrossSave]this page[/url]? If you are and you're getting authentication errors, please ensure you're using all the correct login credentials, both for Steam and the Xbox account you wish to link. Please double check you're signing in to the correct Xbox profile/Steam ID as well, as this has been known to trip up players. If you continue to experience issues even after verifying all this info, we'd recommend trying the setup process on a different device, just to see if that helps. You can also try using a different browser and/or an incognito browser window. If the issues still persist, though, please provide more info about the errors so we can look into this further.