A. IE 6 contains a hard-coded list of unsafe files in the shdocvw.dll file. IE 6 uses the unsafe-file list to prevent you from accidentally opening a file type that might cause problems on your computer.
The complete list of unsafe extensions is
- .ad
- .adp
- .asp
- .bas
- .bat
- .chm
- .cmd
- .com
- .cpl
- .crt
- .exe
- .hlp
- .hta
- .inf
- .ins
- .isp
- .js
- .jse
- .lnk
- .mdb
- .mde
- .msc
- .msi
- .msp
- .mst
- .pcd
- .pif
- .reg
- .scr
- .sct
- .shb
- .shs
- .url
- .vb
- .vbe
- .vbs
- .vsd
- .vss
- .vst
- .vsw
- .ws
- .wsc
- .wsf
- .wsh
To add file extensions to the unsafe-file list, perform the following steps:
- Start the registry editor (regedit.exe).
- Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\UnsafeFiles\Include (if this registry value doesn't exist, you'll need to create it).
- From the Edit menu, select New, Key.
- Enter a name of the extension you want to add (e.g., enter .txt as HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\UnsafeFiles\Include\.txt).
- Close the registry editor.
To establish exceptions to the core product's unsafe-file list, perform the following steps:
- Start the registry editor (regedit.exe).
- Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\UnsafeFiles\Exclude (if this registry value doesn't exist, you'll need to create it).
- From the Edit menu, select New, Key.
- Enter the name of the extension you want to exclude (e.g., enter .exe as HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\UnsafeFiles\Exclude\.exe).
- Close the registry editor.
If you remove the registry entries, Windows will restore the IE 6 unsafe-file list to its default values.
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