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Internet explorer

Microsoft Internet Explorer (MSIE) is the default Web Browser included with Microsoft Windows.

MSIE 4 to 9

MSIE 4 to 9 uses the Internet Explorer History File Format (or MSIE 4-9 Cache File format). The Cache Files commonly named index.dat are used to store both cache and historical information.



The WebCacheV01.dat and WebCacheV24.dat files are in the Extensible Storage Engine (ESE) Database File (EDB) format


Internet Explorer will apply its setting in the following order, where the lower the order overrides settings in the higer order.

  1. Settings in Machine policy key
  2. Settings in User policy key
  3. Settings in User preference key
  4. Settings in Machine preference key

Machine policy key

HKET_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\Internet Settings

Machine preference key

HKET_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings

User policy key

HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\Internet Settings

User preference key

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings

Security Zones

0 - My Computer

1 - Local Intranet Zone

2 - Trusted Sites Zone

3 - Internet Zone

4 - Restricted Sites Zone

5 - Custom


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Command line options

MSIE supports various command line options, see: IE Command-Line Options


Recovery store

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On Windows Vista and later:

C:\Users\%USER%\AppData\Local\Microsoft\Internet Explorer\Recovery

Typed URLs

Internet Explorer stores the cached History (or Address box) entries in the following Windows Registry key:

HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\TypedURLs

See Also

Recovery store

Typed URLS

Internet Explorer 10