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How do I encrypt an individual computer file?

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Hi brianeckhear

  1. Click Start, point to All Programs, point to Accessories, and then click Windows Explorer.
  2. Locate the file that you want, right-click the file, and then click Properties.
  3. On the General tab, click Advanced.
  4. Under Compress or Encrypt attributes, select the Encrypt contents to secure data check box, and then click OK.
  5. Click OK. If the file is located in an unencrypted folder, you receive an Encryption Warning dialog box. Use one of the following steps:
    • If you want to encrypt only the file, click Encrypt the file only, and then click OK.
    • If you want to encrypt the file and the folder in which it is located, click Encrypt the file and the parent folder, and then click OK.
Note that if you allow other users access to an encrypted folder and they put an encrypted file in it then they would need to grant you access to file before you can open it.

Also encrypted files cannot be stored on remote servers unless it's configured as Trusted for delegation. To do that you would need admin access to the domain controller

More info can be found here

I'm not 100% certain but I don't think encryption capabilities are built into Windows Home editions. You could compress the file in this case and password protect it.

Posted on May 11, 2009

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Which operating system ?
Encryption is a method of preventing unauthorized access to computer files.
When you apply encryption to a file, the file is altered so that it cannot be read by others, unless you have given them an encryption key.

Windows XP supports encryption through EFS, the Encrypting File System.
If you have encrypted a file on your Windows XP computer, but no longer want or need the file to be encrypted, you can remove file encryption by changing the file's properties in Windows Explorer. Locate the file from which you want to remove encryption in Windows Explorer.
Right-click on the file, then click the "Properties" link in the context-menu.

This opens a Properties window.
Click the "Advanced" button in the attributes section of the Properties window.

This opens the Advanced Attributes window.
Click to uncheck the box next to "Encrypt contents to secure data" in the Advanced Attributes window.

Click the "OK" button to close the Advanced Attributes window.
Click the "Apply" button in the Properties window, then click the "OK" button.

This closes the window and completes the encryption removal process.
Open Encrypted Files

Windows XP supports file encryption through EFS, the Encrypting File System.
You can encrypt files with EFS so that only you and designated users can open them.

You open files that you encrypted just as you would any other files.
However, you cannot open files that another user encrypted with EFS, and other users cannot open files that you encrypted, unless the user trying to open the file has been added to the list of authorized users for that file.

You can authorize users to open encrypted files using the Windows XP EFS management tools.
Click the "Start" button, then click the "My Computer" icon on the Start menu.

This opens the My Computer window. Navigate to the encrypted file for which you want add an authorized user.


Right click the encrypted file, then click the "Properties" link in the context menu. This opens the Properties window.

Click the "Advanced" button in the Properties window.
This opens the Advanced Attributes window.

Click the "Details" button in the Advanced Attributes window.
This opens the Encryption Details window.

Click the "Add" button in the Encryption Details window.
This opens the "Select User" dialog box.

Click the user you want authorize to open the encrypted file, then click the "OK" button.
This closes the dialog box.

Click the "OK" buttons in the Encryption Details and Advanced Attributes windows to close them. Click the "Apply" button in the Properties window, then click the "OK" button to close the window and complete the process.

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You can go to the desktop folder and see if that whole folder is set as encrypted. Right click on the folder and clock properties. Then click the advanced button, and see if the encrypted check box is marked. If it is, see if you can clear the check mark.Try doing the same thing with any individual file that is encrypted. You can format a USB drive with some format other than NTFS. When you copy an encrypted file over to that USB drive, it should force it to be unencrypted, if it is being encrypted by EFS. Otherwise, it was encrypted before it was put on the CD or DVD, and there is nothing you can do except try to get the password used to encrypt it.

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I encrypted some text using a software.the software asked me to enter a key to encrypt the text,finally the encryption was successful.a few days later i lost the copy of software that i used to encrypt the...


all the encryption softwares use different encryption algorithm.i.e. different steps to encode a file.
the other software shows that the file was not encrypted because for this software, you previously encrypted file is an original file and not encrypted file.
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The files on a DVD are encrypted. Therefore, they can't be opened individually.

By law, you have a right to the files on your DVD which is why there are programs such as DVD Decrypter which will allow you to create backups of your DVD collection.

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Why cant I add music.....all suuported audio music files....the program is not recognizing any of my music files as "supported files." ?????


Best george litt

I found the following information on Individual Software's website. Apparently, music downloaded from the Internet, or bought online, for example using iTunes, may cause problems with SlideShow Expressions. I include a link for more reading; go to 'frequently asked questions': http://support.individualsoftware.com.

Here is some of the info:

Why won't my music files work in Photo & Video Expressions? [SlideShow too, I guess]

Photo & Video Expressions is not compatible with audio files that have been protected by Digital Rights Management (DRM) functionality. Most audio files purchased online through Internet music retailers like iTunes, Urge, or Rhapsody are encrypted with some form of DRM. Similarly, audio files that have been extracted from a CD or DVD (the process known as "ripping") using certain media applications (iTunes, Windows Media Player, etc.) often have default settings that encrypt the files extracted.

There is no way to use DRM audio files purchased from online music retailers with Photo & Video Expressions. However, if you want to use music and audio files that you have extracted from your CD collection, then all you have to do is change the ripping setting in your media application before you extract the files to your computer.


Suggestions are given on how to change ripping settings in iTunes and Windows Media Player.


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From: 11407336 (South Africa)


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Actually, .menc file (Microsoft windows mobile encrypted file) isn't a real file type extension, it only indicates that the file is encrypted on a Storage Device (windows mobile) where Storage Card Encryption feature is installed.... They can't be directly converted to Jpeg. You have to remove the encryption and then restore them to normal jpeg file. First transfer the files to the computer, and then disable the Storage Card Encryption from the Mobile/Device and again transfer back to the device.
More details with illustrations here (click here).

Good luck.

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I CANNOT VIEW MENC FORMAT


The .menc extension is the indicator that tells whether a file is encrypted. The purpose of the extension is to indicate that you can't open those files. A Lock icon is also associated with the encrypted files.
When you insert the storage card back to your device where the files were encrypted, the [GUID] will match with the decryption key on your device and the [GUID].menc extension will not be displayed. Encrypted files will appear just like normal files and they can be opened.

Decrypting files:
To decrypt files that are encrypted, the current solution is to transfer them from the storage card to a computer via ActiveSync or Windows Mobile Device Center, and then copy them back to the storage card after the Storage Card Encryption has been disabled on the device.
  1. To disable Storage Card Encryption:
  2. Go to Start>Settings>System Tab>Encryption.
  3. Uncheck the box that says “Encrypt files placed on the storage card.”
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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.

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