When deploying new Windows Server 2025 virtual machines on an ESXi 8.0+ host, you encounter ISO Boot Failure:
A newly created VM fails to boot from the attached Windows ISO image.
The VM console displays a blue screen with the Windows Boot Manager error:
File: \EFI\Microsoft\Boot\BCD
Status: 0xc000014c
Info: The Boot Configuration Data for your PC is missing or contains errors.
The vmware.log file of the affected VM records the following errors:
Guest: Status upon boot failure: Time out
Guest: Status upon boot failure: No Media
[msg.Backdoor.OsNotFound] No operating system was found.
VMware vSphere ESXi 8.0
It points to file system corruption within the ISO or an incomplete transfer/upload process.
1.Re-download the Official Media: Re-download the Windows Server 2025 ISO image directly from the official Microsoft source.
2.Verify File Integrity: Before uploading, verify the integrity of the downloaded file by matching its MD5 or SHA-256 hash value against the official source metadata.
3.Re-map and Power On:
Edit VM Settings -> Virtual Hardware -> CD/DVD Drive.
Browse and re-select the newly uploaded, verified ISO.
Ensure Connected and Connect at Power On are checked.