| Details | |
| Product: | Exchange |
| Event ID: | 8200 |
| Source: | EXCDO |
| Version: | 6.5.0000.0 |
| Message: | Calendaring agent failed in message delete notification with error error code on path: %3. |
| Explanation | |
| The free/busy module failed to initialize, possible because of a null pointer. | |
| User Action | |
| Contact Microsoft Product Support Services. | |