What does BSOD 406 (LOADER_ROLLBACK_DETECTED) mean?

 
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LOADER_ROLLBACK_DETECTED

The LOADER_ROLLBACK_DETECTED bug check has a value of 0x00000196. This indicates that the version of the OS loader does not match the operating system.

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.

LOADER_ROLLBACK_DETECTED Parameters

Parameter Description
1 Loader security version
2 OS security version
3 Reserved
4 Reserved

Dump evidence for LOADER_ROLLBACK_DETECTED

For LOADER_ROLLBACK_DETECTED, preserve the complete dump, the four bug-check parameters, the exact Windows build, loaded-module list, and the event timeline immediately before the stop. AllStat summarizes the condition as “LOADER_ROLLBACK_DETECTED”; that sentence identifies the failure class, while the parameters and stack determine which object, driver, processor, or subsystem instance was involved.

Analysis order for LOADER_ROLLBACK_DETECTED

  • Run WinDbg !analyze -v, then inspect the documented meaning of each LOADER_ROLLBACK_DETECTED parameter instead of relying only on the probably-caused-by line.
  • Find the earliest abnormal event: driver update, firmware change, device reset, storage error, verifier report, resource exhaustion, or application hang connected with loader / rollback / detected.
  • For LOADER_ROLLBACK_DETECTED, keep third-party filter, security, storage, graphics, and virtualization drivers in the module inventory; removing evidence before dump analysis can obscure the responsible path.

Do not repeatedly reboot a machine affected by LOADER_ROLLBACK_DETECTED before collecting the dump and event logs. For LOADER_ROLLBACK_DETECTED, recovery actions should follow the component identified by the stack and parameters, not merely the symbolic stop-code name.


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