| Debugging Tools for Windows |
The SESSION_HAS_VALID_SPECIAL_POOL_ON_EXIT bug check has a value of 0x000000EC. This indicates that a session unload occurred while a session driver still held memory.
The following parameters are displayed on the blue screen.
| Parameter | Description |
|---|---|
| 1 | The session ID |
| 2 | The number of special pool pages that are leaking |
| 3 | Reserved |
| 4 | Reserved |
This error is caused by a session driver not freeing its special pool allocations prior to a session unload. This indicates a bug in win32k.sys, atmfd.dll, rdpdd.dll, or a video driver.