TransMac locks the drive exclusively when it’s performing operations (reading/writing). The “locked by another program” error usually means:

Here are the step-by-step methods to resolve this error, ordered from simplest to most advanced. 1. Close All File Explorers and Programs Often, the simplest solution works.

How to Fix "TransMac Drive Has Been Locked by Another Program"

: Actively checking the newly inserted drive for malware.

Wipe all existing volumes, partition maps, and formatting data: clean Use code with caution.

Go to > Settings > Update & Security > Windows Security . Click Virus & threat protection > Manage settings .

TransMac Error: "Drive Has Been Locked by Another Program" – Causes and Fixes

If Windows still claims the drive is locked, you can use diskpart to force-clean the drive's partition table. This is the most effective solution for this specific TransMac error.

: Try a different port, ideally a direct motherboard port rather than a hub. Write-Protect Switch

Note: Remember to turn this back on after completing the task.

Identify your USB drive number (e.g., Disk 2) by its size. Type select disk X (replace X with your USB drive number).

TransMac handles APFS with limited write support. For APFS, the “locked” error sometimes means the drive was improperly unmounted from a Mac. Use a Mac to repair it first.

: Holding an open hook to auto-play or display the drive partitions.

Sometimes the simplest way to beat the Windows Indexer is speed: Unplug the drive. Open TransMac as Administrator. Plug the drive in and immediately

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