If you are having an issue with downloading the Collaaj Application, there is the possibility your Network Admin has a policy setting that is preventing our application from being downloaded.
1. Are you seeing the file name downloading with filename_exe instead of filename.exe. If so, you can try to rename the file to .exe after downloading and can run to install.
2. Try using another browser such as Chrome, Firefox, Safari, etc.
Otherwise, you will need to contact your Network Admin to resolve the policies that are in place preventing the application from being downloaded.