Re: EFS Recovery on stand-alone computers?

From: Carey Frisch [MVP] (cnfrisch_at_nospamgmail.com)
Date: 03/19/05


Date: Sat, 19 Mar 2005 08:27:02 -0600

The files can be decrypted only with your original encryption certificate
and its associated private key.

Best practices for the Encrypting File System
http://support.microsoft.com/kb/223316/EN-US/

HOW TO: Remove File Encryption in Windows XP
http://support.microsoft.com/default.aspx?scid=kb;EN-US;308993

Without a backup of the original Encryption Certificate Key, encrypted files
are unrecoverable as they will stay encrypted forever. There is no recovery
method since the encryption algorithm is now completely different with a
reinstall of Windows XP.

See if the following articles help in any way:

HOW TO: Take Ownership of a File or Folder in Windows XP
http://support.microsoft.com/default.aspx?scid=kb;en-us;308421

Encrypting File System in Windows XP
http://www.microsoft.com/technet/prodtechnol/winxppro/deploy/cryptfs.mspx

EFS Files Appear Corrupted When You Open Them
http://support.microsoft.com/default.aspx?scid=kb;en-us;329741

-- 
Carey Frisch
Microsoft MVP
Windows XP - Shell/User
Microsoft Newsgroups
Get Windows XP Service Pack 2 with Advanced Security Technologies: 
http://www.microsoft.com/athome/security/protect/windowsxp/choose.mspx
-------------------------------------------------------------------------------------------
"M. Jennings" wrote:
| How do I access an EFS encrypted file on a USB drive, when the USB drive is 
| moved to a second stand-alone computer?


Relevant Pages

  • Re: Help with Opening an Encrypted Folder
    ... Remove File Encryption in Windows XP ... Take Ownership of a File or Folder in Windows XP ... Best Practices for the Encrypting File System ...
    (microsoft.public.windowsxp.security_admin)
  • Re: Recovering encrypted files after video hardware failure
    ... video card failure... ... If so, how (copy the encryption key, etc.?)? ... Best practices for the Encrypting File System ... in Windows Server 2003, in Windows 2000, and in Windows XP ...
    (microsoft.public.windowsxp.general)
  • Re: Does NTFS Security protect you from theft
    ... XP Pro does support EFS encryption, but be carefull it is possible to render ... Best practices for the Encrypting File System ... in Windows Server 2003, in Windows 2000, and in Windows XP ...
    (microsoft.public.windowsxp.security_admin)
  • Re: Recovering Encrypted Files
    ... Remove File Encryption in Windows XP ... Best Practices for the Encrypting File System ...
    (microsoft.public.windowsxp.security_admin)
  • Re: Folder Security Problem
    ... Remove File Encryption in Windows XP ... Take Ownership of a File or Folder in Windows XP ... Best Practices for the Encrypting File System ...
    (microsoft.public.windowsxp.security_admin)

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