为什么我上不了MSN?

当你的MSN 无法登录，且提示错误代码为80048820，这种问题一般是由于你的系统时间不对，先校准系统时间，如果仍然无法登录，可能是由于DLL文件注册信息丢失，下载这个批处理文件 http://www.msn-problems.com/downloads/register-messenger-dll-files.bat 运行一下，问题应该可以解决

官方解释：

When you start MSN Messenger you cannot sign in, and you get the message:

Sorry, we were unable to sign you in to the MSN Messenger at this time. Please try again later.

To let us try and troubleshoot the problem, click the Troubleshoot button.

80048820

Fix this error / possible solutionThis error seems to indicate a problem with MSN Messenger's encryption routines.
The usual cause is that the time on your computer is not correct.
To correct the time on your computer, double-click the clock in the bottom right of your screen, in the window that appears you should check both the time and date.
If