Windows XP SP2 Tips: IE Problem Solved

Why does IE open certain files in plain text?
Phenomenon:
When opening an mp3 media file in http in IE, the mp3 file is displayed as plain text.
Analysis:
This phenomenon is caused by a mismatch between the extension and content of the file, or a mismatch between the content type reported by the server and the extension or content of the file. To completely solve the problem, you need to contact the administrator of this website to fix this problem. .
Solution:
This is an enhanced security feature of IE in Windows XP SP2 - MIME Handling Enforcement. We do not recommend disabling this security feature unless it is a last resort. Disable this security feature of IE. Modify the registry:
HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Internet
Explorer\\Main\\FeatureControl\\FEATURE_MIME_SNIFFING
iexplore.exe: 0 (REG_DWORD)
-or -
HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\ Internet
Explorer\\Main\\FeatureControl\\FEATURE_MIME_SNIFFING
iexplore.exe: 0 (REG_DWORD)< Br> On the other hand, the user can also modify the security settings in the area that causes the abnormal content to be displayed. This setting can be customized by modifying the custom level button in the security area, and for 'Open files based on Content, not file extension' The setting changes (Enable/Disable).
Why the red security center icon appears on the task tray
After installing the Windows XP SP2 service pack, sometimes red appears in the task tray area Security Center icon, but sometimes it does not appear.
The Security Center icon does not work under normal conditions. Even if it is manually opened, only the green icon will appear in the task tray area. Red appears. The current system has the following conditions:
Firewall not enabled
Automatic update is not enabled
Virus protection software has expired (usually referred to as virus definition library)