Windows Encryption question

ddantes
ddantes used Ask the Experts™
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Running Windows 7 Professional SP-1 32-bit.  I have a folder with millions of files, most of which are encrypted with Windows EFS.  The folder, itself, is encrypted, but some of the files within it are not. I would like all the files to be encrypted, but I don't have a way of isolating the ones which still require encryption.  If I select the folder's security properties, and tick "Encrypt", to be applied to all the folder contents, I'd like to know if Windows needs to re-apply encryption to the files which are already encrypted, or only to the unencrypted files.  Changing the attributes of the entire contents would take weeks.
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Distinguished Expert 2018
Commented:
Use the command line.

cipher /e /s:c:\yourEFSfolder

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It will only touch files that are not already encrypted. It will mark the folder in a way so that files copied to it will be encrypted automatically from now on.

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Commented:
Very useful, thank you!
Distinguished Expert 2018

Commented:
You are welcome.

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