Windows 10: How to backup EFS encryption key in Windows 10

Whenever we encrypt any data, we need a simple key just to unlock it. Well, this key is everything. This key is the foundation of the security on the user’s front. And keeping it safe and secure is one of [...]

This post How to backup EFS encryption key in Windows 10 is from TheWindowsClub.com.

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Backup the EFS encryption key file


Bitlocker and EFS are not the same thing. Bitlocker is full-disk encryption; EFS is per-file encryption.

I agree that it's probably some IT policy from your university account. You should backup your key: Backup Encrypting File System Certificate and Key in Windows 10 Security System Tutorials

 

Backup the EFS encryption key file

My IT support staff told me that it doesn't depend on them. So why did those message start to appear?
Anyway, do you think I should make a copy of certificates on a external storage or try to decrypt all files?

 

Backup the EFS encryption key file


Yesterday I installed OneDrive app and linked it to my office 365 enterprise University account. Since then, every time I turn on my pc, I receive a warning about backup of the encryption key from EFS application. But I have never used bitlocker.
I did some search online and I got the list of all encrypted files: there are thousands of files and belongs to Apps, like facebook, onedrive, inkscape and so on.
So my questions are:

• why did that message suddenly appear?
• why are those files encrypted?
• do those files have to be encrypted?
• bitdefender has just found Gen:Trojan.Heur2.GZ.@FZ@bq2Abpn in temp folder. Could I have got a ransomware that is encrypting all files?

Thanks in advance!