When sending data using SMB to an SMB share, an error occurs and data cannot be sent although you are able to browse the folder. The device displays error code : #801 ("Check the Server "). The cause has been found to be an issue with Windows 8.1 and Windows Server 2012 R2.
The certificate has expired, or contains incorrect information. Install the correct CA certificate. Check the certificate for validity period and domain name in the DNS settings. Cannot analyze the authentication server certificate.