| Event Id | 21018 |
| Source | Microsoft ISA Server Control |
| Description | The monthly 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. SOLUTION : Check the validity of the log summary configuration.Try to manually delete the log summary file. |
| Reference Links | Event ID: 21018 Of Source ID: Microsoft ISA Server Control |
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