For error 80072f19, the solution is
IE-> Internet Options-> advanced-> [remove check] Check the server certificate revocation status.
For error 0x81000370, the solution is
1. Whether the "date/time attribute" on your computer is set correctly: double-click the time to check whether the date and time are set correctly.
2. If your account and password are not saved in MSN, make sure that the account and password you entered are correct (note the uppercase and lowercase letters and the account suffix ).
3. Disable the "Automatic Detection" setting in your browser. For Internet Explorer users, click the IE "tool" menu, click "Internet Options", click the "connection" tab, click the "LAN Settings" button, and then clear the "Automatic Detection Settings" box.
4. Clear IE cache and Cookies: open Internet Explorer, press the tool menu, select "Internet Options", and click "Delete Files" and "delete Cookies.
5. check IE Security Settings: open Internet Explorer, press the tool menu, select "Internet Options", select "advanced", and drag the scroll bar to the security constituency, verify that "Check server certificate revocation" is not selected and that "use SSL 2.0" and "use SSL 3.0" are selected. Then press "OK ".
6. Click "start" -- "run", type: regsvr32 softpub. dll, and then press "OK ".
7. Check the incorrect proxy server settings. On the MSN Messenger "Tools" menu, click "options ". On the "Connections" tab, make sure that you have cleared the "My use proxy server" check box.
8. Firewall and third-party applications may affect connection to MSN Messenger. You can disable the application, firewall, or open the corresponding firewall port, and then try to connect to. Net Messenger Service.
9. If you use ICS or routers for the LAN, you may need to adjust some settings or update the hardware/firmware driver.
10. If your Passport is not recognized, log on to the Passport site http://www.passport.com and make sure it is recognizable. If it is recognizable, but still unable to log on to. NET Messenger Service, it may be that the Message Server temporarily shuts down the maximum traffic that is being maintained or reached the Internet (during peak usage ). Please try again later. You can also check the server status page to view the latest server information.
11. If the site is still unrecognizable at Passport, please go here: http://memberservicesnet.passport.com/memberservice.srf and choose: "I forgot my password ".