If you’re a frequent Skype user, you might have noticed that Skype keeps a record of all events including instant messages, calls, file transfers and SMS all stored and accessible from the Conversation tab by clicking on the Show History button.
Deleting the chat and call history in Skype is easy, but the Delete History option is buried inside Skype menus. All you need to do is choose Tools > Options, go to the Privacy tab and hit the ‘Clear History’ button.
A dialog box will popup asking you for confirmation regarding deleting all previous text chats, voicemail, calls, file transfers and SMS messages. Hit Delete and you’re done. The Skype call and chat history has been deleted.
If you want to disable or turn off Skype history, just use the ‘No History’ option under ‘Keep History for’ in the Privacy tab.