ERROR_BLOCK_TOO_MANY_REFERENCES 0x8007015B

Error code 347 · HRESULT 0x8007015B

WINDOWS

A file system block being referenced has already reached the maximum reference count and can't be referenced any further.

Windows troubleshooting diagram: Device Manager warning and a system file scan
Windows errors: check drivers, system files and Event Viewer, in that order.

What it means

ERROR_BLOCK_TOO_MANY_REFERENCES is a Windows error code (system error 347, returned as HRESULT 0x8007015B) reported by Windows. Its official message is: “A file system block being referenced has already reached the maximum reference count and can't be referenced any further.”

How to fix ERROR_BLOCK_TOO_MANY_REFERENCES

  1. Reboot once — many one-off system codes disappear with a clean restart
  2. Repair system files: 'sfc /scannow' then 'DISM /Online /Cleanup-Image /RestoreHealth'
  3. Find the source in Event Viewer → System: filter for this exact code and open its provider link

Related errors

ERROR_BLOCKED_BY_PARENTAL_CONTROLSERROR_MARKED_TO_DISALLOW_WRITESERROR_STORAGE_TOPOLOGY_ID_MISMATCHERROR_CANCELLEDERROR_NETWORK_UNREACHABLEERROR_LOGON_FAILUREERROR_FILE_CORRUPTERROR_DISK_CORRUPT

Source: Microsoft WinError.h

Last updated: