BitLocker is only available in Windows 10 Pro, Enterprise, or Education editions. If you want to enable BitLocker in Windows 10 Home, you'll need a trustworthy third-party tool.
M3 BitLocker Loader is such a tool that can help you protect your internal data partition with BitLocker encryption. Besides, it also allows you to encrypt external storage devices like USB flash drives, SD cards, SSDs, or HDDs with BitLocker on Windows 10 Home.
One great feature of this BitLocker for Windows Home tool is that it lets you resume the encryption after it's interrupted or paused without data loss. Unlike the built-in BitLocker, M3 BitLocker Loader for Windows is also able to lock the BitLocker-encrypted drive without restarting the PC.
Follow these steps to enable BitLocker on Windows 10 Home:
Step 1: Download and install M3 BitLocker Loader for free.
Step 2: Launch the app, select the drive you want to encrypt with BitLocker and click Encrypt.
Step 3: Enter your password twice and click Next.
Step 4: Save the BitLocker recovery key.
Step 5: Wait for the encryption process to complete.