X64 Exception Type 0x12 Machinecheck Exception Link Jun 2026

Signal loss or timing mismatches across the PCIe bus, QuickPath Interconnect (QPI), or Infinity Fabric. Decoding MCE Error Logs and Register Data

An is a critical hardware-level error generated by an x86-64 processor. It indicates that the CPU has detected an unrecoverable internal hardware error, system bus failure, or data transmission error across components. When this exception occurs during system boot or runtime, it triggers a catastrophic system halt—often resulting in a Red Screen of Death (RSoD) on enterprise servers or a Blue Screen of Death (BSOD) on consumer computers. x64 exception type 0x12 machinecheck exception link

Advisory: Apollo 6500 Gen10 - System May Report an Uncorrectable Machine Check Exception (MCE) During Boot When an SN1200E or SN1600E Fibre Channel HBA Is Installed Signal loss or timing mismatches across the PCIe

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. When this exception occurs during system boot or

When software diagnostics point to a specific component but don't provide definitive proof, hardware swapping is the most effective diagnostic method:

Before analyzing dumps, check the built-in hardware error log.

Memory bus errors frequently report as machine check exceptions.