so far there has been no official info how to remove skype account and how to delete record of chat on outlook.com, it make so many user confused, especially they that concern about privacy. But apparently on skype website there has a functions to unlink Microsoft account (outlook/hotmail/live). We will discuss later, before unlink just make sure that all of chat record are deleted from outlook.com.
Here I will share how to delete chat history on outlook.com, at least so far this way worked for me.
As known on outlook.com there is no menu where user can delete chat history, so when we open chat feature, all chat record are exist even since the first time when skype was integrated, this that make user frustrate.
Now, if you still have skype app installed on your system (if don't just install first), then sign in using your skype account. After login you can see on your profile all recent chat history same like you see on outlook.com
If there is no history on skype app, just do the same way, on skype app go to menu Tools > Options, on Privacy Setting set no history and select Clear history, as you can see at the image below
NOTE this will delete all of chat record, so ensure to make a backup for specific chat that want to keep, like copy paste it to notepad or else. After deleting then click save, review your profile and now you won't see chat history again on skype app
as well as on outlook.com, go login to your outlook account where your skype account is integrated, now there will show friend list only, that mean all of chat history on outlook.com has been deleted
I hope everyone can validate this way as well as it can also worked for user who has the same issue.
UPDATE the way you could remove your skype from outlook click on this link
