| Event Id | 21017 |
| Source | DNS Intrusion Detection Filter |
| Description | The daily summaries could not be deleted. Use the source location %1 to report the failure. |
| Event Information | According to Microsoft : Cause : This failure may occur for one of the following reasons: The log summary configuration is invalid.The log summary file can not be accessed. Resolution : Check the validity of the log summary configuration.Try to manually delete the log summary file. |
| Reference Links | Event ID 21017 from Source DNS Intrusion Detection Filter |
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