Windows 10 Cannot Export / Backup my EFS certificate private key

[SuperPlay-UK]

Windows 10 Pro
1909


Hi Folks,

I am trying to export my EFS certificate as a backup, however I am having no joy.

Note: I can encrypt and decrypt files using EFS no problem using my account.


Trying in Certificate Manger:

certmgr.exe (As Administrator)
Personal / Certificates
Right click the EFS cert / Export


The option to export the private key is greyed out, with a note:

The associated private key is marked as not exportable. Only the certificate can be exported



Using cipher.exe:

cipher /x c:\temp\EFSCertBack


Error: Key not valid for use in specified state.




Before I decrypt all of my EFS files and start a fresh any ideas?



Cheers

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