| Details | |
| Product: | Exchange |
| Event ID: | 451 |
| Source: | ESE |
| Version: | 6.5.0000.0 |
| Message: | process name (process id) file nameUnable to write to section 4 while flushing logfile error code. Error %5. |
| Explanation | |
| This is an unexpected error that usually occurs during runtime and may indicate that the log drive failed. | |
| User Action | |
| Check the system event log for any indications of hardware problems. A Restore may be required if the problem is media failure. | |