I have three computers (Dell Desktop XPS-8700), HP laptop Envy X360 M6-AQ105DX, and Microsoft Surface Pro 4). The surface Pro 4 has Bitlocker disabled. All three run Windows 10 Pro and have SSDs as their main drives. The desktop has a secondary spinning drive and the Surface Pro 4 has a, SDXC card mapped to a drive letter.
I use the Encrypted File System (EFS) to hold sensitive information in one encrypted folder on all three machines. The encrypted folder is shared through the Home Group with read/write permission. I used to be able to freely share the encrypted files using File Explorer.
On or about 12/1/17 that stopped working. I get permission errors when I try to share the files. (other non-encrypted files in other folders can still be shared freely.) I have tried a lot of things like disabling the Home Group, recreating it, and re-sharing the subject folders. Nothing has worked.
I recently ran across a suggestion to do a Network Reset on all of the computers. What I eventually did was uninstall the network adapters on all the machines (checking the option to have Windows uninstall the drivers from the computers). Then I let Windows rediscover the network adapters and download drivers.
This fixed sharing of encrypted files from any machine to any other (copy/edit/delete). However, the next morning when I rebooted all of the computers, I was (almost) back where I started. I cannot copy or edit shared encrypted files, BUT (!), I can delete encrypted files on one computer from another computer. This is not consistent, though. Sometimes if I do the network reset or uninstall/reinstall of the network adapters, I can share files among two of the machines but not the third! In any event, nothing survives reboot except being able to delete files on one computer from another.
I have not seen mention of this problem on any forums or support sites. Any thoughts?