| Event Id | 21018 |
| Source | ISA Server Streaming Filter |
| Description | The monthly summaries could not be deleted. Use the source location 1 to report the failure. |
| Event Information | According To MIcrosoft: 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 | Microsoft product: Internet Security and Acceleration Server Version: 4.0.3443.594 Event Source: ISA Server Streaming Filter Event ID: 21018 |
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