The troubleshooting guide to the above error for scanned workstations is missing one error that can be quite common.
If you have enabled SMB message signing on your network and the scan resolves the wrong IP for the computer which another computer is using, you will see the above error.
For example
PC1 was using 192.168.1.1 but has shutdown. Its DNS entry still records this IP.
PC2 is using 192.168.1.1 and is online. Its DNS entry records this IP.
When attempting to scan PC1 the IP 192.168.1.1 will be used but the scan will fail because the computer names do not match and the scan is rejected. I believe this is caused by SMB message signing, and so the possibility of a name mismatch should be recorded in the troubleshooting guide.