FAQ's » Windows File Block Security Unblock
Extract the zip file using a tool like 7-Zip or WinRAR.
SC Black DVR Guide * DVR User Guide. * DVR Player zip file. * MClient zip file. Rottweiler Security mclient.zip
If you are an user on a Mac, mclient.zip is the standard installer for the macOS Client for M-Files. How to "put it together": Extract the zip file using a tool like 7-Zip or WinRAR