What does Windows error code 718 (ERROR_LOG_HARD_ERROR) mean?

ERROR_LOG_HARD_ERROR

Windows generated an application hard-error popup record

ERROR_LOG_HARD_ERROR corresponds to Win32 error value documented as: Application popup: %1: %2 A component requested a hard-error notification whose useful content is carried by inserted strings. Historically this could produce an interactive system dialog; modern services may instead leave an event or diagnostic record.

Where the result appears in real systems

• Legacy native applications calling hard-error mechanisms.
• Subsystem failures propagated to an application popup.
• Compatibility code retaining old NT behavior.

What to collect before making changes

Collect all message insertions, process identity, session number, desktop, and event-log record; determine whether the process was interactive or running in session 0; inspect a dump if the hard error follows memory corruption or loader failure.

Handling and recovery

Fix the originating failure and remove dependence on interactive hard-error dialogs. Services should report structured errors to their controller and event log because nobody may be able to respond to a popup.

What not to infer from this code

This result describes the reporting mechanism, not the underlying cause. The application name and inserted message text contain the actual incident details.

References

• Microsoft: System error codes 500–999