If you are looking for past conversations from when the service was still official:
Original Microsoft/Hotmail accounts will no longer work for sign-in. You must register a new account specifically on the Escargot website. Download Msn Messenger 10 For Windows 7
Official support for MSN Messenger (later Windows Live Messenger) has ended, but you can still run classic versions on Windows 7 through community-run revival services. Current Status of MSN Messenger If you are looking for past conversations from
Microsoft officially retired the service in 2013, replacing it with Skype. While "MSN Messenger 10" was not a standard release name—Microsoft shifted to the "Windows Live" branding for versions 8.0 through 2012—Windows 7 users typically used or 2011/2012 (v15.x/16.x) . How to Install and Use on Windows 7 Download Msn Messenger 10 For Windows 7