Decrypt files


G

Guest

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!!!
 
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R

Rock

Jason Wang said:
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/
 
G

Guest

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 said:
Jason Wang said:
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/
 
R

Rock

Jason Wang said:
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 said:
Jason Wang said:
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.
 
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C

C J.

Jason Wang said:
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 said:
Jason Wang said:
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/

Jason... I feel your pain about your files. Been there - done that.

In the unlikely event you recently did a clean install -- and are now
restoring your encrypted files or folders, onto your PC from a backup you
made -- unless you remembered to export your Encryption key off the old
installation onto a floppy, before doing a clean install you could be SOL.

Hey, I've made this mistake... and so have alot of other folks. (Hopefully,
this isn't the nature of your problem)

Most people who use EFS don't seem to think about this important item, until
later on they're seeing the "Access Denied" message on some encrypted files
or folders they made.

Ironically, Microsoft didn't give the average home user a heads up - back at
the beginning - about importance of backing up your key if you use EFS - in
the documentation.
 

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