Consequently, many business managers and owners choose to secure data using EFS, or Encrypting File System, encryption available in Windows.

Learn how to use EFS Encryption to secure files, via Advanced File Attributes or using the cipher command line tool and make them inaccessible to others.

EFS: Handle with Care The Encrypting File System, while serving a need, can also cause big headaches—especially with the XP implementation. Here’s how to do it right. By Bill Boswell 03/01/2002 Most ...

Windows Insider EFS: Handle with Care The Encrypting File System, while serving a need, can also cause big headaches—especially with the XP implementation. Here’s how to do it right. By Bill ...

Logged in, and there's some notification asking me to backup the key because it is encrypting my file system. I didn't ask it to do that, and I wasn't even logged in as admin before the reboot.

EFS features the ability to create backups of your encryption certificates and keys -- ensuring that you don't lose access to important files.

This article from Windowsecurity.com examines how to manage and use Microsoft's Encrypting File System in a Windows 2000 or Server 2003 domain.

If you have EFS enabled on your network, I would hope you have defined at least one EFS Recovery Agent. When you look at an EFS encrypted file details it lists the certificate for that EFS ...

XP doesn't offer a similar warning, but if you change the password for an account other than the active one, it warns that this account will lose access to EFS-encrypted files.