<A HREF="http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q308421&ID=KB;EN-US;Q308421&LN=EN-US&rnk=6&SD=tech&FR=0&qry=accessing encrypted files&src=DHCS_MSPSS_tech_SRCH&SPR=WINXP&" target="_new">HOW TO: Take Ownership of a File or Folder in Windows XP</A>
<A HREF="http://www.surasoft.com/tut/xpefs.htm" target="_new">Encrypted File System (using NTFS in Windows XP)</A>
<A HREF="http://support.microsoft.com/?kbid=308993" target="_new">HOW TO: Remove File Encryption in Windows XP</A>
<A HREF="http://www.microsoft.com/technet/treeview/default.asp?url=/TechNet/prodtechnol/winxppro/reskit/prnb_efs_lnfx.asp" target="_new">Data Recovery and Data Recovery Agents</A>
<A HREF="http://www.atlguide2000.com/windowsxp/index.php?act=view&aid=114" target="_new">Encrypting File System (EFS)</A>
As you can see from these articles, the possibility that you can recover your data isn't very good.
However, don't blame yourself ... Microsoft does not feel the need to explain this very well, and you are not the first person to be caught in this trap. Even experienced users have found themselves with inaccessible data after a re-installation of the OS, to their dismay.
This is just one of the reasons why I keep continue preaching that Microsoft's insistence on NTFS being used with WinXP (especially the Home Edition) is not necessarily such a smart idea for all users. I believe that NTFS security is overkill for the home desktop user with a standalone system, and should normally only be used in a corporate environment. The 32GB FAT32 partition size/formatting restriction within Win2K and WinXP is ridiculous, despite the inefficiency of the file system, and the inability for FAT32 to handle individual files over 4GB in size. It should still be a listed user option to decide, one way or another, without being forced to resort to DOS and FDISK to overcome the barrier.
Sorry to use this thread as a rant, but I've just seen the exact same scenario in which you've been caught far too many times for my taste. NTFS can be dangerous without studying the file system before taking advantage of its' so-called performance enhancing and higher security attributes ... not every new user who migrates from Win98 is comfortable with suddenly being confronted with multiple users and groups, or how adminstrative privileges should be handled.
This is also why I think Home Edition is nearly useless, since it doesn't have access to the Group Policy Editor ... a tool which I think should be in all versions of Windows. Leaving it out of Home Edition was a deliberate sabotage of their own product, (although this doesn't apply to you.)
I hope the links I've posted will give you some idea of why a better, general understanding of EFS is an important aspect of working with NTFS, even if Microsoft doesn't make any real effort to educate the user of the inherent risks that are involved.
Toey
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