EFS (or Encrypting File System) is a feature included in some high-end versions of Windows Vista and 7 which allows the user to encrypt data on a filesystem level.

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EFS and encrypting new files automatically

I have an issue where files are not always being encrypted. I did a right-click and set the folder to encrypt all sub-folders and files when they are dropped in. As of right now, new files are not ...
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Cipher Command adduser with MSA accounts

We are running some software on a Windows Server 2012 R2 server. We would like to use Microsoft Service Accounts to run the services for this software. However, this software needs to be able to ...
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122 views

Recover EFS Certificate from dead Motherboard

I created an encrypted file with Windows 7 32-bit on a NAS (mybooklive) and backed the file (not the certificate) up locally to the computer's hard drive. The original Win7 computer had a motherboard ...
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Is the EFS key of all accounts associated with the same Microsoft account the same?

My boot hard drive stopped working but I had backed up all the files on an external hard drive and encrypted it with EFS prior to this. I unfortunately did not make a backup of the key and so was ...
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45 views

How to disable Encrypting File System

I accidentally (believe it or not) enabled Encrypting File System on Windows 7 that uses my personal certificate. I don't need the encryption, and I don't want to be stuck with inaccessible files in ...
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40 views

Can't export Windows 10 EFS certificate

Just got a new laptop and encrypted a couple of folders, the handy "export certificate" reminder popped up, so I exported it. Job done. This reminded me to check I had backed up my other computers' ...
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81 views

Is this a ransomware?

I just got this window on my main computer: Apparently, it's from Windows. I checked, the process EXE file is the original one (efsui.exe or something like that). But the thing is, I don't use EFS (...
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90 views

Delete EFS encrypted file without certificate

I used to use a Yubikey with a certificate for file encryption. I then modified the encryption certificate on the key assuming I could use the backup certificate stored on a flash drive to decrypt the ...
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Can the SAM database be encrypted with EFS to prevent offline password cracking?

Is it possible to EFS-encrypt the SAM database to prevent offline password cracking? Would it have to be encrypted as the SYSTEM user?
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Which windows services are ok to: SC Type= own?

Looking at the best answer to "How to find memory usage of individual Windows services" posted on Server Fault it looks like SC Config ServiceName Type= own is the best way to 'split-off' services ...
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Why might Windows EFS not list a certificate from Trusted People?

I have an encrypted file. I've added a public-key-only certificate (exported from another computer that had the private) to all of the following: Local Computer\Personal\Certificates Local Computer\...
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EFS not available on Windows 7 Home Premium: workarounds?

This may well be an easy question to answer. I am running Windows 7 Home Premium and my hard disk's file system is set to NTFS which in theory should support EFS. However I've read that EFS is only ...
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188 views

How do I let the SYSTEM account use EFS encryption?

I want to encrypt some files used by a Windows service running as Local System (i.e. using the NT AUTHORITY\SYSTEM account). Since BitLocker doesn't seem to work with software RAID, EFS seems to be ...
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50 views

Backed-up EFS certificate doesn't work after resetting password

I'm on a Windows Vista computer. I've wanted to use EFS for a little while but I wanted to experiment on some individual files first. While doing that, I backed up my certificate and key, reset my ...
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Accessing EFS-encrypted files after resetting Windows password

I have some EFS-encrypted files in Windows. The owning user account is protected by a password, which can be easily bypassed (i.e. reset) by many tools and methods. So what will happen to these ...
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3answers
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Vulnerability of EFS (Encrypting File System) on Windows 7

I am looking into using EFS (Encrypting File System) at file/folder level on Windows 7. I read Wikipedia article on EFS and it does mention several vulnerabilities related to Windows 2000 and XP. ...
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EFS File encrypted with “System”

We're trying to set up EFS to secure a file share so that only a service account can access the files in it. Everything works fine, until we try to have an FTP process send files to the folder. ...
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What are differences between EFS and BitLocker in Windows? [closed]

We learned in MCITP about their features. Are there any conflicts between EFS and BitLocker? Can we use both of them together? If so, how?
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280 views

How to turn off EDP on Windows 10

Since Windows 10 automatically updated to the latest version (November 2015 update I believe), all my EFS files are flagged with a lock icon. And when I copy an EFS-encrypted file to a FAT drive, it ...
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If Bitlocker is turned on, How to decrypt OS volume when boot up?

I want to know decrypting process when boot up encrypted volume using BitLocker. Because MS says, it is encrypting entire disk drive whether the volume is installed OS or not, which means the file ...
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322 views

Upgraded to Windows 10, forgot to backup EFS key for encrypted files

I recently upgraded to Windows 10. I realized I forgot to backup my EFS key so no I can't access my encrypted images. I even tried setting myself as the owner of them. Is the key stored in the $...
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How to remove Encrypted flag when copying a file from a HDD to a USB drive?

Environment: Windows 7, but applies to other EFS-compatible Windows versions I have a file that is encrypted using standard Windows EFS encryption. When I copy that file to a USB drive using Total ...
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I started getting a weird message “Encrypting file system - Back up your file encryption key”

I started getting a strange message when I start my computer. An icon appears in the system tray, and a popup tells me "Encrypting file system - Back up your file encryption key". I know what EFS is, ...
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Strange temporary “Access denied” error accessing encrypted files

After a system reboot (Win7 x64), an application reported that it couldn't access a file in an EFS-encrypted directory. Accessing via programs gave "Access denied". Permissions were normal and fine. ...
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EFS Causes Some Applications to Fail

I have some files stored in an EFS (Encrypted File System) directory. Some programs, such as Visual Studio, fail when working with a project that is located in an EFS directory. As an example, Visual ...
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46 views

Accessing Windows encrypted files on another PC

I am new to WIndows EFS and find it very useful except with a problem, can't access those files in another Windows PC. I find some tutorials on how to access them in other windows PCs(1, 2). After ...
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How to use backup EFS certificate to decrypt encrypted files?

I have some files that were encrypted on a now extinct Windows 7 system. I made sure to backup my keys, this one is called efs.pfx. Double-clicking it launches the Certificate Import Wizard which ...
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531 views

Encrypting a folder

I'm familiar with bitlocker, having been using it for a while, but I am looking at just encrypting a folder instead. But I just don't understand the options it's giving me. When I right-click a ...
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BitLocker vs. Encrypting File System (EFS) on Windows 7

So BitLocker encrypts the entire hard drive, while EFS encrypts individual files. Is there any difference in the way that they implement the encryption? Do they both use your user account password as ...
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128 views

Can I use EFS to encrypt the user directory?

I want to know if doing so would prevent windows from logging in to the user or not, has anyone tried to encrypt the user profile folder or the windows folder?
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EFS locked me out all on its own?

I have a handful of files that are encrypted on disk. I am unable to access them or remove the encryption. I was able to access these files somewhat recently, as I can see when I copied some of them ...
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390 views

Encrypting %userprofile% using EFS?

Is it safe to encrypt my Windows 7 %userprofile% folder using EFS ? i.e. are applications or system logon going to be affected?
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Will enabling BitLocker remove EFS from already encrypted files in Windows 8.1?

There are a few files on my Windows 8.1 machine that are encrypted using EFS - BitLocker is currently disabled. I want to know whether BitLocker will look for, and remove EFS encryption from files if ...
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512 views

cant get windows cipher.exe adduser to work

I'm trying to find examples on how to properly use cipher.exe. Most of the info I've found doesn't cover adding users so they can also view the encrypted file. I'm trying to create a script which ...
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EFS File not accessable after reboot

I have encrypted a file with EFS for a user (let us name this "User X"). An application which is running as "User X", is able to access the encrypted file. It keeps working fine across log off and log ...
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what are the commands to reocver EFS encryption keys from the domain recovery agent?

they are in this video but i can not see the commands would really appreciate if anyone could help , been trying to do this for hours now. https://www.youtube.com/watch?v=meQHYNVZYdY
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Decrypt EFS files

Here's my situation. Was using EFS on my Vista laptop - had a backup of my certificate. HD crashed...managed to recover some of my files (Encrypted) - but they "lost" the "Encrypted" attribute in ...
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Unexpected Access Denied error while accessing EFS encrypted file

I am getting Access Denied error when I try to access some files. ACL is OK, all ACE's all intherited, I have full access to these files and I am the owner of these files. ACE's are exactly same as ...
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Decrypt EFS-encrypted file (I do have certificate backup)

I have an encrypted folder on a Windows 8 machine, which was encrypted by another user-account (which I cannot boot into due to a corrupted profile). But I do have the private-key backup certificate ...
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How to set the “encrypt” attribute on the root folder?

There is an "Encrypt contents to secure data" checkbox for every folder on the drive, except the root folder. It's accessible by right-clicking a folder, and selecting "Advanced" properties:   &...
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Backup EFS encryption key generated, but no encrypted files? Track what caused the key creation

In I started getting a weird message "Encrypting file system - Back up your file encryption key" a user experiences a prompt that I also experienced yesterday for the first time. Now the ...
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Restoring data from encrypted WinXP partition image

EDIT: it seems that the partition is encrypted with a full-disk encryption software that uses TPM—I don't see any other way the partition could be looking like it's fully encrypted, while at the same ...
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File Access Denied despite being administrator, owning the files, and having full permissions

I'm trying to copy data from my old laptops hard drive to my new desktop's. But on a certain folder, I can't copy any of the actual files - just the subfolders. I am informed that I require permission ...
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284 views

Cannot apply Encrypted attribute to shared Vista folder

I have a folder on Windows Vista Business that is shared. When I try to encrypt the folder (apply the Encrypted attribute), I get an error message: An error occurred applying attributes to the ...
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I've lost access to my encrypted files

I have an account on Windows Server 2008 R2, which at the moment I am using as a desktop. I had certain files encrypted under a standard user account. I changed my password, and then lost power ...
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81 views

Windows EFS encryption

I'm using Bitlocker for a full disk encryption solution. However, I'd like to avoid having to shut down my computer to leave it in a secure state. If I enable EFS encryption on the folders which I ...
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777 views

What folders to encrypt with EFS on Windows 7 laptop? [closed]

Since I've been using my laptop more as a laptop recently (carrying it around) I am now evaluating my strategy to protect confidential information in case it is stolen. Keep in mind that my laptop is ...
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how to open encrypted folder

I have an encrypted directory using Windows XP Encryption. I didn't backup the certificate and I formatted my HDD to reloaded the OS as it was corrupt. I am now not able to access the encrypted ...
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EFS - Find out what's encrypted

Since a few days when I start Windows Vista i get a Popup from "Encrypting File System" (coming from process efsui.exe) asking me to backup the certificate and key. I don't know what i did to get ...
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468 views

copy efs encrypted file to another computer using old pc password

I encrypted several drives on my old pc. The pc is sold but I kept the hard disk. Now I want to copy some very important files from the old hard disk to my laptop but I can only access the drive where ...