: The virtual machine (VM) may have multiple virtual optical drives, and the setup process is attempting to connect to "CD/DVD 2" while the resource is locked or incorrectly mapped.
If you are frequently deploying Windows 11, investing time in creating a single, consolidated ISO for all installation needs is the "better" solution to avoid this error entirely.
: Corrupted "LowerFilters" or "UpperFilters" can block drive recognition. and navigate to: windows 11 cannot connect unattendediso to cd dvd 2 better
Are you using a (like MDT or a custom script) to create the ISO? Is the ISO being created locally or from a network share ? I can provide more specific commands for your environment. Share public link
Fixing Windows 11 "Cannot Connect UnattendedISO to CD/DVD 2" Error : The virtual machine (VM) may have multiple
Click and look for a file named autounattend.iso or similar within the VM directory on your host machine.
Right-click your VM in VirtualBox and select Settings > Storage . and navigate to: Are you using a (like
Instead of forcing the hypervisor to manage two separate optical discs (the Windows 11 OS ISO and the Unattended ISO), you can inject your answer file directly into the main operating system image.
First, try mounting the ISO file directly within Windows 11:
Which are you using? (vSphere, Hyper-V, Packer, etc.)
Other software or utilities may be interfering with the process. Try disabling any recently installed software or utilities that may be causing conflicts: