| Previous | Next |
| REGISTRY_ERROR | NO_BOOT_DEVICE |
MAILSLOT_FILE_SYSTEM
Mailslot file system failure for MAILSLOT_FILE_SYSTEM
MAILSLOT_FILE_SYSTEM is bug check code 0x00000052. Mailslots are a Windows IPC mechanism exposed through the file-system namespace. This bug check points to the kernel mailslot file-system driver or a filter interacting with mailslot create/read/write semantics.
How to read it in a dump
- The stack should show whether the failure is in create, read, write, cleanup, close, or filter-driver processing.
- Because mailslots are message-oriented IPC, buffer lengths and message boundaries can matter.
- It is not the same as an SMB or named-pipe protocol error unless the stack shows those layers.
What to check
- Check file-system filters, security products, and legacy IPC-heavy software.
- Inspect IRP lifetime and buffer handling around mailslot operations.
- Confirm whether the crash requires network browser, legacy service discovery, or old IPC workloads.
References
Dump evidence
Preserve the complete dump, the four bug-check parameters, the exact Windows build, loaded-module list, and the event timeline immediately before the stop. AllStat summarizes the condition as “this result”; that sentence identifies the failure class, while the parameters and stack determine which object, driver, processor, or subsystem instance was involved.
Analysis order
- Run WinDbg
!analyze -v, then inspect the documented meaning of each parameter instead of relying only on the probably-caused-by line. - find the earliest abnormal event: driver update, firmware change, device reset, storage error, verifier report, resource exhaustion, or application hang connected with mailslot / file / system.
- keep third-party filter, security, storage, graphics, and virtualization drivers in the module inventory; removing evidence before dump analysis can obscure the responsible path.
Do not repeatedly reboot a machine affected by this result before collecting the dump and event logs. Recovery actions should follow the component identified by the stack and parameters, not merely the symbolic stop-code name.
Looking for a different code? Search another status or error code.