Dangerous of index.dat file in Windows XP and How to Remove it?
Posted on Apr 20, 2007 Windows XP 6 0 Receive Updates For This Category
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Jan 13, 2010
index.dat is a file used by the Internet Explorer web browser. The index.dat file functions as an active database, which runs as long as Windows is active. It functions as a repository of redundant information, such as web URLs, search queries, and recently opened files. Eventhought, you’ve deleted cookies, history and temporary internet files, these index.dat files still there. It only takes a few steps to disable index.dat.
Reboot your computer in Safe Mode by pressing F5 or F8 (depends on your machine)
Login as Administrator
Start -> Run -> type cmd -> click OK (MS-Dos window will display)
on your command prompt type CD\ -> hit Enter key
then type del index.dat /s (space between .dat and /s)
index.dat files should be permanently deleted and you don’t have to go thru these processes above again.

D Bowers
Jun 16, 2007
In re removing index.dat on startup:
http://www.windowstips.org/how-to-remove-indexdat/
Are the instructions on the referenced page both safe and effective for XP Pro today – June 16, 2007?
Thanks
D Bowers
WindowsTips.org
Jun 18, 2007
Yes it works on Windows XP Pro.
joe
Jul 21, 2007
Did that and the message appears, “Cannot find index.dat.” So now what?
WindowsTips.org
Jul 23, 2007
It shows that your index.dat has been deleted
“index.dat files should be permanently deleted and you don’t have to go thru these processes above again.”
jennifer
May 23, 2008
How do you enable it, if it has been disabled?
shibaji
Jun 18, 2009
Again from where i am find index.dat file after delete a file.