Hi,
First we need to perform a clean uninstall MSN software please check the steps mentioned below:
Windows 7
1. Exit all programs that are running.
2. Click Start, then click Control Panel.
3. In Control Panel, click Programs.
4. Click Uninstall a program.
5. Select MSN Explorer and click Uninstall.
6. Click MSN Internet Software, MSN, or MSN Internet Access, then click Uninstall.
7. If you are prompted to confirm that you want to remove the program, click OK.
8. Goto c:/program files / and delete msn folder
And to install MSN software follow these steps:
1. Open a Web Browser or Internet Explorer window by clicking on the blue “e” icon on the Desktop.
2. In the Internet Explorer (Browser) window, type http://membercenter.msn.com/ in the address bar and press Enter.
3. Once the page loads, click on the Sign In button and enter your MSN e-mail address and password.
4. Click Download MSN Software on the right-hand side.
5. Click Download and install the latest MSN software.
6. Click the Install Now button.
7. Click Run in the File Download box. This will initiate the download of MSN’s Installation Wizard which may take about 2 to 5 minutes. You may be prompted to click Run again.
8. On the next window, choose "Yes, I'm currently connected to the Internet."
9. Enter your primary "MSN e-mail address" and passwords in the field provided and click next.
10. The next page after will prompt you to accept the MSN service agreement. To accept and continue with the installation, type your name in the blank field exactly as it appears, then select "I Accept."
11. In the Installation option page, select "Typical" and click on Next. (If you want to pick & choose components choose Custom)
12. It will display a list of components that are being installed. The rest of the download and installation should take from 30-45 minutes. It depends on your computer and connection speed. Click on Finish once it appears on the screen.
13. The MSN welcome screen will show up and you can sign-in to MSN.
Thanks and regards
Mubarak