How to fix: Failed to start the Virtual machine

How to fix: Failed to start the virtual machine

Virtual machines (VMs) allow users to run multiple operating systems on a single machine. They’re essential for developers, IT professionals, and businesses. One common frustrating issue is the “locked file” error, which prevents a VM from starting.

Error Trace:

The process cannot access the file because another process has locked a portion of the file

Cannot open the disk ‘C:\testingdocs\Windows 10 OracleDB\Windows 10 Demo.vmdk’ or one of the snapshot disks it depends on.

Module ‘Disk’ power on failed. Failed to start the virtual machine.

Screenshot

 

What is a Locked File Error?

A locked file error happens when a virtual machine is unable to access a file it needs to boot. This issue arises because another process or instance has locked the file, making it unavailable.

Common Causes

• Improper VM Shutdown: The VM didn’t close properly, leaving residual lock files.
• Concurrent Access: Multiple users or applications trying to access the same VM.
• Host System Crash: A sudden crash can leave lock files lingering.
• Software Bugs: Glitches in the virtualization platform.

Steps to Fix a Locked File Issue

Try to Restart the Virtual Machine.
Often, a simple restart clears temporary locks.

• Power Off the VM. Proper Shutdown of the Virtual Machine.
• Navigate to the VM’s directory on the host system.
• Locate and Remove the Lock File.

 

• Look for files with extensions like .lck or .lock.
• Delete these files manually.
• Reboot the Host System: This ensures no background processes are interfering.
• Start the VM.