https://www.tntware.com/tntconnect/help/faq_en/pages/i-seem-to-be-in-the-wrong-database-how-do-i-get-back-to-where-i-left-off.aspxOpen TntMPD and then under the File menu, click on Close . You should see a blank screen with something like this in the middle: Pay attention to the list of recently used databases . If there is more than one, then it's possible that you double-clickedenCommunityServer 2008.5 SP2 (Debug Build: 40407.4157)