Outdated or faulty drivers may be causing the connectivity issue. To update the CD/DVD drive drivers:
: Click on the Parallels actions menu and select Stop .
If you are seeing this error right now, try these manual workarounds: windows 11 cannot connect unattendediso to cd dvd 2 better
: Instead of relying on a virtual CD/DVD drive, use tools like to create a bootable USB drive from the Windows 11 ISO. Bypass the "Press Any Key" Prompt
The root of the error often stems from the hypervisor expecting two separate disc inputs: Drive 1 for the core Windows 11 installation image, and Drive 2 for the automated answer file ( unattended.iso ). If Drive 2 does not exist in the hardware profile, the boot crashes. Outdated or faulty drivers may be causing the
To resolve this issue and proceed with your installation, try the following solutions: Primary Fixes for Virtual Machines
Q: Why is Windows 11 unable to connect an unattended ISO to a CD/DVD? A: The issue may be caused by a corrupted or incompatible ISO file, insufficient privileges, outdated or faulty drivers, or conflicting software. Bypass the "Press Any Key" Prompt The root
The primary ISO (the Windows installer) should be on the first virtual DVD drive.
This is achieved by creating a custom Windows installation ISO with a special configuration file called autounattend.xml . This file is integrated into the ISO to bypass prompts for language selection, license keys, partitioning, and Microsoft account login, making the installation fully automated. When you choose to install an "unattended" version of Windows in Parallels Desktop, the software creates and uses a temporary image file named Unattended.iso to power this automated process. When this process breaks, you see the connection error.
: The most effective workaround is to bypass the virtual CD/DVD drive entirely. Use tools like to create a bootable USB drive from your Windows 11 ISO. Reset the Virtual Machine (VM)
the unattended.iso on the primary CD/DVD drive (CD/DVD 1).