Bug Check 0x17E: MICROCODE_REVISION_MISMATCH

The MICROCODE_REVISION_MISMATCH bug check has a value of 0x0000017E. It indicates that one or more processors in the multiprocessor configuration have inconsistent microcode loaded.

Important

This topic is for programmers. If you are a customer who has received a blue screen error code while using your computer, see Troubleshoot blue screen errors.

MICROCODE_REVISION_MISMATCH Parameters

Parameter Description
1 The processor CPUID signature value of the processor that mismatched.
2 The expected microcode revision for the processor.
3 The actual, reported microcode revision for the processor.
4 The processor index of the mismatching processor.

Cause


One or more processors in the multiprocessor configuration have inconsistent microcode loaded. This bugcheck indicates that faulty system firmware has mistakenly applied a microcode update to only a subset of processors in the host configuration. System firmware must apply microcode updates to all processors in a uniform fashion.

See Also


Bug Check Code Reference