This stem account is already linked to a different rockstar account

[Montechgamer]

the thing when i log in says "This stem account is already linked to a different rockstar account.Please log in with that steam account instead"
Like what is it talking about im trying to log into rockstar right now and its not working

[psykoteky]

Well, there is... different 'reasons' for this error. You are using the wrong login credentials, if you have multiple R* accounts, try them all. You could have been 'hacked' - in which the 'email' was changed on the linked account and a 'new' social club account was made with your now released email. In that case you should recover access to your old social club account - that is still linked - to your steam account.

You should try to log into the social club website. Go to account , settings, linked accounts tab. If you do NOT see your steam account showing up there when you log in with the 'right' credentials - you could be 'hacked'. If you have multiple R* accounts, double check all of them to see if any actually show your steam account in that linked accounts tab. If you don't see teh steam account, that is a problem - especially if you have already played the game..... or.. are already linked due to other R* games on steam - like rdr2.

You can also check your email inbox, for R* emails - notifying you that the email on your social club account changed. It may be in another language, old, spam/trash/filtered, etc. It usually has a link in it to 'recover'/undo the email change - if that link isn't expired.

..and the copypasta on account recovery, forgotten/hacked accounts/deleted emails-
Fun times. Join the neverending flood of this nonsense. Much info - click and read -
https://steamcommunity.com/app/271590/discussions/0/3811787298086212982/#c3811787298086583512

tl;dr/lazy - use this link below to contact R* without logging in to RECOVER the already linked social club account/fix/change email to one you have access to. Many hoops to jump to prove you're the owner, have steam account, cdkey etc, and roll the dice on help-
https://support.rockstargames.com/categories/360002126893?step=29c52d9f
https://support.rockstargames.com/categories/200013306?step=c61ec1a8

/goodluck - for some it is a couple hours, others days/weeks, multiple tries.