| Event Id | 8242 |
| Source | EXCDO |
| Description | The existing appointment with the subject <subject> in mailbox <mailbox name> was deleted. The start time, or both the duration and end time were missing. |
| Event Information | This behavior can occur if a file level virus scanner is scanning the installable file system (IFS) M drive of the Exchange 2000 computer, and may occur during a weekly or daily scan of the server. The virus scanner may be set to include all drives of the server. When the M drive is scanned, the items in the information store are treated as files. In this case, the virus scanner modifies a property or attribute of the calendar items, and as a result calendar items may be hidden. To resolve this behavior, stop any virus scanner from scanning the M drive. To recover lost calendar entries, either restore calendar items from a backup that was made before the calendar items were lost, or manually re-create the calendar items. |
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