Windows Server 2022 - error backup file busy 450 was an FTP problem due to TLS 1.3 issues from introduction of TLS 1.3 by default on that OS. Windows 11 does the same thing. Maybe try TLS 1.2.
Windows Server 2022 - error backup file busy 450 was an FTP problem due to TLS 1.3 issues from introduction of TLS 1.3 by default on that OS. Windows 11 does the same thing. Maybe try TLS 1.2.