I linked my Microsoft account to my PS5 to play Forza horizon 5 but only got a "you may not...

You can only link one account:

"Linking a Microsoft account to a PSN account is on a title-by-title basis and permanent. Players have the ability to unlink the Microsoft account to that PSN account, for Forza Horizon 5, but will be constrained to relinking to only that specific and originally linked, Microsoft account"

https://support.forzamotorsport.net/hc/en-us/articles/39144665637651-Forza-Horizon-5-on-PS5-FAQ

Hi pouyan,

Thank you for posting in Microsoft Xbox Community. I understand that you want to inquire about unlinking a Forza Horizon 5 account from your PlayStation 5.

According to Forza Horizon's FAQ, linking a Microsoft account to a PSN account is on a title-by-title basis and permanent. Players have the ability to unlink the Microsoft account to that PSN account, for Forza Horizon 5, but will be constrained to relinking to only that specific and originally linked, Microsoft account.

Here's the official support FAQ page for your reference:

https://support.forzamotorsport.net/hc/en-us/ar...

Regards,

Alvaro

Hi Pavlos,

Thank you for posting in Microsoft Xbox Community. I understand that you're having issues logging in to Forza Horizon 5 on your PlayStation 5.

Before following these steps, please ensure you have done the following:

Create a Microsoft account.

Create a PlayStation Network account.

Confirm the account has an active PlayStation Plus subscription to play online.

Install Forza Horizon 5 on the PlayStation 5 console.

Once confirmed that you meet all the requirements, here's the step-by-step instructions with pictures on how you could proceed:

https://support.forzamotorsport.net/hc/en-us/ar...

Regards,

Alvaro

Hi Marc,

Thank you for posting in Microsoft Xbox Community. I understand that you're having issues logging in to Forza Horizon 5 on your PlayStation 5.

Before following these steps, please ensure you have done the following:

Create a Microsoft account.

Create a PlayStation Network account.

Confirm the account has an active PlayStation Plus subscription to play online.

Install Forza Horizon 5 on the PlayStation 5 console.

Once confirmed that you meet all the requirements, here's the step-by-step instructions with pictures on how you could proceed:

https://support.forzamotorsport.net/hc/en-us/ar...

Regards,

Alvaro

Hello Dmitrijs, this is Manuela!. I'm an Independent Advisor and community user like you ready to assist with this.
Not a Microsoft employee.

I'm sorry to hear you're having trouble when trying to sync your progress in Forza Horizon 5. Let's try to sort this out, but before that please tell me:

Is this happening only with Forza Horizon 5?
Are you playing the version available on the Xbox app/Microsoft store or are you playing the one from Steam?
Is this happening with more games from the Microsoft store or just Forza Horizon 5?
May I know if you tried using a different internet connection in your PC?
And what procedures you tried to fix this inconvenience?