First, try mounting the ISO file directly within Windows 11:
Unlike the general CD/DVD drive errors that can pop up in a native Windows installation, this specific error is usually caused by a bug in older versions of Parallels Desktop itself, preventing the software from properly reading the special installer file.
Create a small virtual hard disk (VHD) or map a USB controller, place the XML file on it, and attach it to the VM alongside the primary Windows 11 ISO. Best Practices for Windows 11 Automated Deployments windows 11 cannot connect unattendediso to cd dvd 2 better
The "UnattendedISO" functionality, particularly in VMware Workstation/ESXi, automates the creation of a temporary ISO file ( autounattend.flp or similar) to handle partitioning, language settings, and user creation. When this fails, it is usually due to:
Consider using third-party software like Rufus (for USB) or ImgBurn (for CDs/DVDs) to create bootable media. These tools often provide more detailed feedback on potential issues. First, try mounting the ISO file directly within
[Create New VM] ➔ [Deselect "Express Installation"] ➔ [Manual OS Setup] ➔ [Standard Windows OOBE]
The good news is that the developers of Parallels Desktop have officially addressed and resolved this issue. When this fails, it is usually due to:
) containing your license key and user settings. If the VM's virtual hardware configuration (specifically "CD/DVD 2") fails to find this file, the installation halts. Parallels Forums Immediate Solutions Manual ISO Attachment : In your VM settings, go to
Create a new VM, but select
While the VM is running, manually go to the hardware settings and "Eject" the disc from the second drive, then re-select the unattended.iso file to force a reconnection. 2. The "Better" Permanent Solutions