解決此類問題關鍵是找出相應軟件的CLSID鍵值。只要知道相應的CLSID,屏蔽掉IE的ActiveX調用，也就可以用來屏蔽3721,CNNIC等惱人插件的自動安裝。也不用更改安全證書，不會彈出提示窗口，很方便解決。

 
　　具體方法:

　　1.新建記事本文件，復制以下內容，并另存為.reg文件。

REGEDIT4

#B83FC273-3522-4CC6-92EC-75CC86678DA4 /3721
#9A578C98-3C2F-4630-890B-FC04196EF420 /CNNIC
#CF051549-EDE1-40F5-B440-BCD646CF2C25 /POPO
#4EDBBAEA-F509-49F6-94D1-ECEC4BE5B686 /中文郵
#BC207F7D-3E63-4ACA-99B5-FB5F8428200C /Baidu
#9BBC1154-218D-453C-97F6-A06582224D81 /Baidu
#00000566-0000-0010-8000-00AA006D2EA4 /Adodb.Stream 2.7
#4B106874-DD36-11D0-8B44-00A024DD9EFF /Adodb.Stream 2.5

[HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Internet Explorer/ActiveX Compatibility/{B83FC273-3522-4CC6-92EC-75CC86678DA4}]
"Compatibility Flags"=dWord:00000400

[HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Internet Explorer/ActiveX Compatibility/{9A578C98-3C2F-4630-890B-FC04196EF420}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Internet Explorer/ActiveX Compatibility/{CF051549-EDE1-40F5-B440-BCD646CF2C25}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Internet Explorer/ActiveX Compatibility/{4EDBBAEA-F509-49F6-94D1-ECEC4BE5B686}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Internet Explorer/ActiveX Compatibility/{BC207F7D-3E63-4ACA-99B5-FB5F8428200C}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Internet Explorer/ActiveX Compatibility/{9BBC1154-218D-453C-97F6-A06582224D81}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Internet Explorer/ActiveX Compatibility/{00000566-0000-0010-8000-00AA006D2EA4}]
"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Internet Explorer/ActiveX Compatibility/{4B106874-DD36-11D0-8B44-00A024DD9EFF}]
"Compatibility Flags"=dword:00000400

　　2.雙擊保存的.reg文件，導入注冊表。