Windows Defender or third-party antivirus software often flags scripting tools (like PyInstaller executables, which this appears to be) as "Trojan" or "Script Injector" and quarantines necessary files.
Incident Response Team Next Steps: If the issue persists, provide the output of running the executable from the command line for further analysis.
Check if any actions were taken against mspm-source.exe or a file in your temporary folder ( AppData\Local\Temp ). failed to execute script mspm-source
If your script requires non-Python files, explicitly declare them during compilation using the --add-data flag:
1. Run the Executable via Command Prompt (To See the Real Error) If your script requires non-Python files, explicitly declare
# Windows mspm-source.exe
Look through the for any tasks with odd names or tasks that point to the mspm-source path you found in Step 1. Right-click the task and select Delete . Using Task Manager Startup: Open Task Manager ( Ctrl + Shift + Esc ). Navigate to the Startup apps tab. Look for mspm-source or an unlabelled program. Right-click it and select Disable . Step 4: Clear PyInstaller Temporary Files Using Task Manager Startup: Open Task Manager (
This guide will walk you through the common causes of this issue and provide actionable solutions to fix it. 1. What Causes "Failed to Execute Script mspm-source"?