| Event Id | 21153 |
| Source | ISA Server NNTP Filter |
| Description | ISA Server report or summary generation error: The daily summaries needed for report or summary generation were generated with a previous version of the product (%1). These daily summaries will not be included in any reports or summaries. Please use the source location %2 to report the failure. |
| Event Information |
According to Microsoft : CAUSE : Some summary files needed to generate the report were generated with a previous version of the product. SOLUTION : Delete these log summary files and then regenerate the report. |
| Reference Links | Event ID: 21153 Of Source ID: ISA Server NNTP Filter |
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