Will the administrator read the encrypted file on the server?

Question

Encryption

There is a server, on it through RDP several users work.
If one of the users encrypts the file (using standard Windows tools), will the server administrator be able to read it?

Answer 1

No, it cannot, because the certificate key will be in the user's space, and the keys in Windows are non-recoverable.
Yes, he can, because after the admin finds an unreadable encrypted file, he will report to the Security Council and there they will have a conversation with the creator of this file.
(If there is no SB in the office and the creator can get away with it, then such an office is what it needs)
PS: An attempt to solve the issue by purely technical means in the case when it usually has non-technical aspects and leads to the appearance of such nuances. Yes, if the server is in Holland, the user is in America, the admin is in Australia - technically there is no way to decipher it. If everyone works in the same office - encrypt, do not encrypt ...