Too many devices when connecting to Outlook.com

I’ve been trying to configure my Hotmail account (which is now Outlook.com) in Outlook 2013 via EAS but I get the following error:

There are too many devices syncing with this account.  To sync using Outlook, try removing another device that is connected with this account such as a phone or another computer.

Followed with:

Line: 97
HTTP/1.1 200 OK
FolderStatus: 177
To re-try press F9…
Error Code: 0x80004005

I’m only using my account on my mobile phone and Outlook 2013 on my laptop and desktop. I can’t find a method to remove any old computers which I might still have.

How can I fix this issue and sync my Hotmail account with Outlook again?