Re: Decrypt files

"Jason Wang" <JasonWang@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message news:3CCE5FE5-945C-4EE8-ACF9-D450F8BB3EF9@xxxxxxxxxxxxxxxx
Thank for your information.

I have tried the method metioned in below article
How To Remove File Encryption in Windows XP
http://support.microsoft.com/?id=308993

But i still can not decrpt it, an error message come about says access is
denied. I was the person who encrypted the folder and i had access to it. I
can not understand how could that happen?


"Rock" wrote:

"Jason Wang" <JasonWang@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote
>I have encrypted some files in my document, for some reason, i can not
> decrypt it. When i try to decrpt it, an error message pop out says that
> access is denied. I am the administor of my personal computer, also, i > am
> the
> owner of the folder. Please help!!!

Did you use EFS that comes with XP Pro? If so here are some links with info
on it.

Encrypting File System in Windows XP and Windows Server 2003
http://www.microsoft.com/technet/prodtechnol/winxppro/deploy/cryptfs.mspx

How To Encrypt a Folder in Windows XP
http://support.microsoft.com/?id=308989

How To Remove File Encryption in Windows XP
http://support.microsoft.com/?id=308993

How To Encrypt a File in Windows XP
http://support.microsoft.com/?id=307877

HOW TO: Share Access to an Encrypted File in Windows XP
http://support.microsoft.com/?id=308991

Best practices for the Encrypting File System
http://support.microsoft.com/?id=223316

How to back up the recovery agent Encrypting File System (EFS) private key
in Windows Server 2003, in Windows 2000, and in Windows XP
http://support.microsoft.com/?id=241201

How to add an EFS recovery agent in Windows XP Professional
http://support.microsoft.com/?id=887414

[Torgeir Bakken]
http://www.beginningtoseethelight.org/efsrecovery/


Sorry I don't know. There are many gotchas with EFS, so that it's been called by some the delayed recycle bin. I am guessing you didn't designate a recovery agent or backup the certificate?

Look at the last link to see if that helps.

--
Rock [MS-MVP User/Shell]

.

Relevant Pages

  • Re: EFS Certificate Needed
    ... Backup and save on non-degrading media the EFS DRA .pfx file ... Foe sure I will follow "Windows Recommendations". ... that recovery agent will only have ... Best practices for the Encrypting File System ...
    (microsoft.public.security)
  • Re: Passwords on Folders
    ... domain computer [there is also a recovery agent for a domain]. ... > Windows under which those permissions were defined. ... use NTFS on your hard drives so you can then EFS ...
    (microsoft.public.win2000.security)
  • Re: Getting back my encrypted directory
    ... Take Ownership of a File or Folder in Windows XP ... > If you start to use NTFS Encrypting File System (EFS), ... > Q241201 How to Back Up Your Encrypting File System Private Key ... > Q242296 How to Restore an EFS Private Key for Encrypted Data Recovery ...
    (microsoft.public.windowsxp.security_admin)
  • Re: Encrypting files on a CD
    ... I have also found this line in the help pages of Windows XP ... Does encrypting a file with EFS and then moving/copying ... >You cannot use EFS directly as CDs do not have NTFS, ...
    (microsoft.public.windowsxp.security_admin)
  • Re: recovery agent
    ... For Windows 2000 a RA can be configured via security policy for the domain ... account when the first file is encrypted with EFS on that computer. ... the configuration of RA is more complex. ... > certificate when choosing a user as a recovery agent). ...
    (microsoft.public.win2000.security)