@jospoortvliet I’m getting this error also, but its when I try to open a file up when i’m under Impersonate user. My account is an admin account I go under user then impersonate then I click on the file that I want to view and can’t view it then i choked the server logs and I get the below error.
Sabre\DAV\Exception\ServiceUnavailable: Encryption not ready: multikeydecrypt with share key failed:error:0407109F:rsa routines:RSA_padding_check_PKCS1_type_2:pkcs decoding error