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How I can "Decrypt data files" on Win XP Professional.

Hi,
I have encrypted some folders and inside data files few month ago. But 15 days ago I have reinstalled OS on the system because of some intermitent problems but I forgot to decrypt data files folder which I have encryped before. Now when I'm trying to open my documents or simply unselect "Encrypted contents to secure data" I'm geeting error.

Please help me to retrive all my data files.

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Since you reinstalled the OS, the certificate for the user has changed. You can try the following methods, but there is no guaranty it will work.
These method apply only if the computer name and users name stays the same as the original. If the machine name or the users name or the users privilege changed, these method will not work.

Only the following people can decrypt an encrypted file:
· The user who encrypted the file
· Any user who was designated as a recovery agent before the file was encrypted
· Any user who has the public key or private key for the recovery agent or the user who originally encrypted the file
· Any user who has been granted access to the file
Members of the Administrators group cannot decrypt files unless the person who encrypted the files designated them as recovery agents before encrypting the files.

Note You must be the original user who encrypted the file or a designated recovery agent for the file to follow these steps

Method 1:
To remove encryption from a file, follow these steps:
1. Use Windows Explorer to locate the encrypted file that you want to decrypt.
2. Right-click the encrypted file, and then click Properties.
3. On the General tab, click Advanced.
4. Click to clear the Encrypt contents to secure data check box, click OK, and then click OK again.

Posted on Dec 02, 2008

  • Frank
    Frank Dec 02, 2008

    Method 2:

    Use Windows Explorer to locate the encrypted folder that you want to decrypt.

    1. Right-click the folder, and then click Properties.

    2. On the General tab, click Advanced.

    3. Click to clear the Encrypt contents to secure data check box, click OK, and then click OK again.

    4. When you are prompted to confirm the attribute change:

    o If you want to decrypt only the folder, click Apply the changes to this folder only, and then click OK.

    o If you want to decrypt the folder and its subfolders and files, click Apply changes to this folder, subfolders and files, and then click OK.

  • siddhardha
    siddhardha Apr 09, 2014

    but the option encrypt contents to secure data is blinking and unable to check that box what to do

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