This usually happens when the repack process breaks the digital signature of the executable. Since the file is unsigned (because you modified it), SmartScreen might flag it. In your distribution email or instructions, warn users to click "Run Anyway" or "More Info" if Windows Defender SmartScreen blocks it. Alternatively, code-sign your repacked executable with your organization's certificate.
In enterprise IT environments, Symantec Endpoint Protection (SEP) is a standard for securing workstations. While the ideal deployment method involves pushing a "Managed Client" via the Symantec Management Console (SEPM), there are specific scenarios where an is required. This usually happens when the repack process breaks
Complete Guide to Downloading and Creating Symantec Endpoint Protection Unmanaged Client Installers This usually happens when the repack process breaks