Error: Program 'fivetran.exe' Failed to Run

Issue

I've successfully installed the Fivetran Connector SDK using the pip install fivetran-connector-sdk command. However, the following error appears when I run the fivetran debug command:

Program 'fivetran.exe' failed to run: Access is denied
CategoryInfo : ResourceUnavailable: (:) [], ApplicationFailedException
FullyQualifiedErrorId : NativeCommandFailed

Environment

• Operating system: Windows
• Fivetran Connector SDK installed via pip install fivetran-connector-sdk
• Executable path: Typically located in the Python site-packages directory (e.g., C:\Users\your_user\AppData\Local\Programs\Python\PythonXX\Scripts\fivetran.exe)

Resolution

This issue is usually caused by Windows Defender or system-level security settings blocking unknown executables. Check the following:

1. Ensure the fivetran.exe file has execute permissions for your user:
   • Right-click the file, go to Properties > Security, and confirm permissions.
2. Check Microsoft Defender and antivirus settings:
   • Open Windows Security > App & Browser Control > Reputation-based Protection.
   • Check if the executable is being blocked under Controlled Folder Access or SmartScreen.
   • If applicable, temporarily disable or whitelist fivetran.exe.
3. Run as administrator:
   • Open PowerShell or CMD as an administrator and re-run the command.
4. Involve your organization's IT support:
   • If you're on a managed system (e.g., corporate device), your organization may have group policies in place.
   • Ask your IT department to: Whitelist the fivetran.exe executable.
   • Adjust execution policies if needed.

Cause

This error is typically caused by Windows blocking unknown or unsigned executables due to Microsoft Defender or corporate IT restrictions. Even though file permissions may appear correct, Windows may still prevent execution unless explicitly allowed.