| Event Id | 25 |
| Source | MSExchangeES |
| Description | A fatal error (0x8000ffff) occurred in an IExchangeEventSink while processing message MessageSubject |
| Event Information | According to Microsoft: Cause: This issue may occur if the script is not monitoring the correct folder. Resolution: you run a script that looks for new mail messages (which are of type IPM.Note) against the Calendar folder, the script will not open objects in that folder (which are of type IPM.Appointment). |
| Reference Links | event id:25 soyrce:MSExchangeES |
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