I encrypted some files with Windows's built-in EFS encryption, which involved creating a new EFS certificate and saving a backup of it somewhere. I recently swapped motherboards/re-imaged my PC and now cannot access the encrypted files, which is expected.
I re-imported my saved certificate using the correct password which worked successfully, but I still cannot access these files - getting various errors about permissions or decryption that aren't very specific.
Here is my current certificate store, I have created a new EFS cert and imported my old one:
Here is the details of the cert matching the thumbprint of the cert that is allowed to access the file.
If I try and remove the checkbox for encrypting these files I get this error:
Are there any steps I missed?