This behavior can occur because a driver has requested (by using the IoCompleteRequest function) that an I/O request packet (IRP) needs to be completed, but the packet has already been completed.
Also, the following file is known to cause this behavior:
File name: Falstaff.sys File version: 18.104.22.168 File size: 36,870 bytes File date: March 23, 2000 Company name: In-System Design, Inc.
To resolve this behavior, contact the vendor of the driver and request an update for the driver.
In regard to the Falstaff.sys file, you may be able to obtain new drivers that can replace the Falstaff.sys file and its associated drivers. These new drivers may use different file names. Refer to the following In-System Web site for more information:
Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.
The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.