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### Instruction:
ISIS-4-ERR_THREAD_DESTROY
### Response:
(Severity: 4), (Category: ROUTING), (Description: IS-IS failed to destroy a thread. This is an internal error. If the error occurred whilst unconfiguring IS-IS then it may be necessary to forcefully terminate the IS-IS process. If the error occurred during normal operation then it may be necessary to restart the IS-IS process to recover.), (Recommended Action: Copy the error message exactly as it appears on the console or in the system log, call your Cisco technical support representative and provide the representative with the gathered information.)
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