Windows Defender Advanced Threat Protection Service failed to start

The error code 0x8007051a indicates that the process cannot access the file because it is being used by another process. This issue typically arises when there are conflicts or access issues within the system or with other applications. Here are some steps to troubleshoot and resolve this issue:

Check for Conflicting Applications:

Ensure no other security software or network-related tools are running that might conflict with Windows Defender Advanced Threat Protection (ATP).
Update Windows Defender ATP:

Make sure Windows Defender ATP and all its components are up to date. Check for any updates or patches from Microsoft.
Restart the Service:

Restart the Windows Defender ATP service. Open a Command Prompt with administrative privileges and run the following commands:
sh

net stop Sense
net start Sense
Check System Logs:

Open the Event Viewer and check the system and application logs for more detailed error messages that could give more context about the issue.
Permissions Check:

Ensure that the Windows Defender ATP service has the necessary permissions to access the required files and directories. You can do this by checking the service account and its permissions in the Services console.
Repair or Reinstall Windows Defender ATP:

If the issue persists, consider repairing or reinstalling Windows Defender ATP. This can be done via the Settings app under Apps & Features.
Check Disk Health:

Sometimes file access issues can be due to disk errors. Run a disk check to ensure there are no underlying issues with the disk:
sh

chkdsk /f
SFC and DISM Commands:

Run the System File Checker (SFC) and Deployment Imaging Service and Management Tool (DISM) to repair any corrupted system files:
sh

sfc /scannow
dism /online /cleanup-image /restorehealth