Following the eth install instructions
I open a console as admin and enter
bitsadmin /transfer cpp-ethereum "https://build.ethdev.com/builds/Windows%20C%2B%2B%20develop%20branch/Ethereum%20%28%2B%2B%29-win64-latest.exe" %temp%\eth++.exe & %temp%\eth++.exe
but I get back the response
DISPLAY: 'cpp-ethereum' TYPE: DOWNLOAD STATE: ERROR
PRIORITY: NORMAL FILES: 0 / 1 BYTES: 0 / UNKNOWN
Unable to complete transfer.
ERROR FILE: https://build.ethdev.com/builds/Windows%20C%2B%2B%20develop%20branch/Ethereum%20%28%2B%2B%29-win64-latest.exe -> C:\Users\me\AppData\L
ERROR CODE: 0x80190194 - HTTP status 404: The requested URL does not exist on the server.
ERROR CONTEXT: 0x00000005 - The error occurred while the remote file was being processed.
'C:\Users\me\AppData\Local\Temp\eth++.exe' is not recognized as an internal or external command,
operable program or batch file.