Windows 8 and 8.1 Forums


How to recover lost Windows EFS certificate

  1. #1


    Posts : 3
    Windows 8.1 Pro with Media Center 64-bit

    How to recover lost Windows EFS certificate


    Hi. I was using Windows 8.1 installed on my C: drive a few days ago. It got infected with virus so I decided to install Windows 10. I formatted my C: drive and installed Windows 10 on it. Once I opened my Windows and went to E: drive, I recalled that I had encrypted everything using EFS and had forgotten to take a backup of the certificate and now I need to recover it somehow.

    Very little space on C: drive has been overwritten. I ran a deep scan to recover files and found about 3M files on it. Is there a way I can find out the certificate file? Any pattern or extension I should be looking for? I've already tried .efx but it gives nothing. Is there any other way to recover the certificate?

      My System SpecsSystem Spec

  2. #2


    Posts : 46
    windows8


    If your EFS certificate is lost or damaged, it is not easy to recover, try some third-party data recovery software, it might be possible.
      My System SpecsSystem Spec

  3. #3


    Posts : 3
    Windows 8.1 Pro with Media Center 64-bit


    As I said before, I have recovered almost 3M files using a thired-party software but I don't know how a certificate looks like so I can't search among them.
      My System SpecsSystem Spec

How to recover lost Windows EFS certificate
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