Repair Windows Error 0x0000009B    |    UDFS_FILE_SYSTEM    |    STOP 0x0000009B


STOP Errors are usually the result of a hardware malfunction or device driver issue. It is also possible to receive a Blue Screen Error due to bad system memory, malfunctioning power supply, components overheating, or hardware overclocked beyond its specification. In older versions of the Windows OS you may also receive Blue Screen Errors due to incompatible DLL files.

Since the only option when receiving a Blue Screen Error is to reboot, any unsaved data is lost. With that in mind, it is very important to eliminate these errors to protect your data.

Basic Troubleshooting

Troubleshooting STOP Errors can be a difficult and time consuming process. Try these basic steps to fix your own Blue Scree Error. We hope it will help you avoid an expensive service call and provide a rewarding experience of solving the problem on your own.

Advanced Troubleshooting

The following details are for advanced users. These are provided for your convenience and may help those with advanced knowledge discover the root cause of their STOP Error.


The UDFS_FILE_SYSTEM stop error code has a value of 0x0000009B. This stop error code indicates that a problem occurred in the UDF file system.


The following parameters appear on the blue screen.

1The source file and line number information. The high 16 bits (the first four hexadecimal digits after the "0x") identify the source file by its identifier number. The low 16 bits identify the source line in the file where the stop error code occurred.
2If UdfExceptionFilter is on the stack, this parameter specifies the address of the exception record.
3If UdfExceptionFilter is on the stack, this parameter specifies the address of the context record.


The UDFS_FILE_SYSTEM stop error code might be caused disk corruption. Corruption in the file system or bad blocks (sectors) on the disk can induce this error. Corrupted SCSI and IDE drivers can also adversely affect the system's ability to read and write to the disk and cause the error.

This stop error code might also occur if nonpaged pool memory is full. If the nonpaged pool memory is full, this error can stop the system. However, during the indexing process, if the amount of available nonpaged pool memory is very low, another kernel-mode driver that requires nonpaged pool memory can also trigger this error.

Resolving the Problem

To debug this problem: Use the .cxr (Display Context Record) command with Parameter 3, and then use the kb (Display Stack Trace) command.

To resolve a disk corruption problem: Check Event Viewer for error messages from SCSI and FASTFAT (System Log) or Autochk (Application Log) that might help identify the device or driver that is causing the error. Disable any virus scanners, backup application, or disk defragmenter tools that continually monitor the system. You should also run hardware diagnostics that the system manufacturer supplies. For more information about these procedures, see the owner's manual for your computer. Run Chkdsk /f /r to detect and resolve any file system structural corruption. You must restart the system before the disk scan begins on a system partition.

To resolve a nonpaged pool memory depletion problem: Add new physical memory to the computer. This memory increases the quantity of nonpaged pool memory that is available to the kernel.

Helpful Tools

The following products are free to try. We have found them to be of the highest quality and value. They have been extremely useful in our own pc troubleshooting and maintainance and we highly recommend trying them out for yourself.

XoftSpySE Anti-Spyware

With a lightning fast free scan and the largest authentic spyware detection database we have seen, XoftSpySE Anti-Spyware finds and removes threats that other spyware programs fail to detect. Download XoftSpySE Anti-Spyware


DriverCure will scan your system for driver and software updates. Its easy to use interface makes keeping your drivers updated quick and simple. They will even send you an email notification when new driver updates are available for your system! It doesn't get any more convenient than this. Download DriverCure

Browse STOP Error Codes:

Is a STOP error code missing?

Help us to make the best resource we possibly can by submitting you very own STOP error code details. If you have detailed information on any STOP error code please let us know by visiting the following link.

Submit Error Details Form

Fix Error Code 0x0000009B    |    UDFS_FILE_SYSTEM    |    Repair Windows Error 0x0000009B