To avoid running into this error during future projects, keep these best practices in mind:
Read community-driven fixes and discussions regarding TransMac issues on the Hackintosh Reddit forum
After disabling Fast Startup, Windows performs a full, clean boot every time. External drives will no longer carry over "ghost locks."
The "Transmac Drive Has Been Locked By Another Program" error is a common but solvable problem. By following this guide, you can effectively diagnose the cause, unlock your drive, and return to your work.