我的問題解決了, 但不知道為什麼. 我 "完整" 移除後按照 MSN 客服的建議安裝 7.0 版就可以正常登入. MSN Messenger 7.0, build 0820 (底下我不縮網址) http://www.microsoft.com/downloads/details.aspx? FamilyID=cf49c56c-8b3e-4eae-9904-9505f47bed45 照客服人員的說法, MSN 7.5 似乎不是 "官方" 的. 他們還問我從那裡抓的. By the way, 在此分享如何 "完整" 移除 MSN Messenger. 雖然是英文的但很簡單理解, 他們的說明很詳細. 謝謝 ! To perform a clean installation of MSN Messenger: 1. Remove MSN Messenger from the computer. a. In the notification area, right-click the MSN Messenger icon, and then click Sign Out. b. Click Start, click Run, type control appwiz.cpl, and then click OK. c. In the list of currently installed programs, select MSN Messenger, and then click Remove. d. If you are prompted to confirm, click Yes. 2. Remove the temporary files and folders from the computer: a. Click Start, click Run, type cleanmgr, and then click OK. b. If you are prompted, click C: in the Select the drive you want to clean up list, and then click OK. Notes: . If you partitioned the hard disk, the CleanMgr utility prompts you to select a drive. . The Disk Cleanup utility displays how much disk space can be freed. . This process can take several minutes. c. On the Disk Cleanup tab, make sure that only the following options are selected: . Downloaded Program Files . Temporary Internet Files . Temporary files . Temporary Offline Files . Offline Files d. Click OK two times. 3. Delete Messenger-related cache files a. Click Start, click Run, type COMMAND, and then press ENTER to open a command window. b. In the command window, type in the following command: del /s "%appdata%\microsoft\MSN Messenger\Listcache.dat" This command deletes all .dat files whose names start with "ListCache" in all subfolders. You may see a list of the files that are being deleted. 4. Delete Messenger-associated registry keys. Important: The following steps contain information about how to modifying the registry. Before you modify the registry, make sure to back it up, and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, visit the following Web site: http://support.microsoft.com/kb/256986 Warning: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk a. Click Start, click Run, type REGEDIT, and then press ENTER. b. Expand HKEY_LOCAL_MACHINE, expand Software, expand Microsoft, and then expand MSNMessenger. Select the MSNMessenger key, and then click Delete on the Edit menu. c. Expand HKEY_CURRENT_USER, expand Software, expand Microsoft, and then expand MSNMessenger. Select the MSNMessenger key, and then click Delete on the Edit menu. Note: In some case you may encounter the error that the key does not exist. If you have typed the command correctly, this may be because the key has already been removed or does not exist on your machine. Note: Type the commands exactly as they appear below, including the quotation marks. REG DELETE HKLM\Software\Microsoft\MSNMessenger /f REG DELETE HKCU\Software\Microsoft\MSNMessenger /f REG DELETE "HKCU\Software\Microsoft\Windows Live\Communications Clients\Shared" /f REG DELETE HKCU\Software\Microsoft\IdentityCRL /f 5. Restart the computer. 6. Reinstall MSN Messenger: -- Hello ~~ ! Welcome to My Blog ---> http://blog.pixnet.net/xvictory --

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