Windows Stop Code 0x000000E8 – INVALID_CANCEL_OF_FILE_OPEN: Causes and Troubleshooting Guide

Quick Answer

The Windows Blue Screen of Death (BSOD) error 0x000000E8 – INVALID_CANCEL_OF_FILE_OPEN indicates that an invalid file object was passed to the Windows kernel routine IoCancelFileOpen. According to Microsoft, the driver that called this routine is responsible for the invalid operation.

This is a kernel-level driver error, not necessarily an indication that a user document or file is corrupted. A faulty, incompatible or incorrectly behaving device driver may be involved. Identifying the responsible driver through crash dump analysis is the most reliable way to investigate the problem.

Users experiencing this error should check recently installed or updated drivers, third-party file-system utilities, storage software and security applications. Avoid randomly deleting system files or modifying the Windows registry.

What Is INVALID_CANCEL_OF_FILE_OPEN (0x000000E8)?

INVALID_CANCEL_OF_FILE_OPEN is a Windows bug check (also called a stop error or BSOD) with the hexadecimal value 0x000000E8.

Windows uses kernel-mode routines to manage operations involving files and devices. One such routine, IoCancelFileOpen, is used by device drivers when handling the cancellation of a file-open operation.

Microsoft documents this bug check as occurring when an invalid file object is passed to IoCancelFileOpen. The file object should have a reference count of one. The driver that calls the routine is identified as being at fault when this condition is detected.

This error generally requires investigation at the driver level rather than simply repairing an individual file or folder.

What Causes the 0x000000E8 Blue Screen Error?

The officially documented cause is an invalid file object passed to the IoCancelFileOpen routine by a driver. Microsoft identifies the calling driver as responsible for the invalid operation.

The exact driver or underlying software condition cannot be determined from the stop code alone. The following areas are worth investigating, but they should not be treated as confirmed causes without additional diagnostic evidence.

1. Faulty or Incompatible Device Drivers

A driver with an implementation error, incorrect object-reference handling or compatibility issue may perform an invalid operation while managing file access. Recently updated, outdated or improperly installed drivers may deserve investigation, particularly when the crash started after a driver change.

2. Third-Party File-System and Storage Drivers

Some applications install kernel-mode components that interact with file operations and storage devices. Examples include backup utilities, disk-management applications, encryption software, virtual-drive tools and file-system filter drivers.

If a crash dump identifies one of these components, its version, compatibility and recent configuration changes should be examined.

3. Antivirus and Endpoint Security Software

Security applications may use file-system filter drivers to inspect file operations and monitor access to files. A problem in such a driver could be relevant to an error involving file-open operations.

However, the presence of antivirus software does not establish that it caused the crash. The dump file should be examined before changing security software.

4. Recent Software or Driver Installation

If the blue screen began after installing a new application, driver update or Windows update, the recent change may provide a useful starting point for troubleshooting.

Pay particular attention to applications that install low-level drivers or modify storage, backup, encryption or file-access behaviour.

5. Driver Compatibility Problems After Windows Updates

A driver that previously worked correctly may encounter compatibility problems following an operating system update. This possibility is worth investigating when the error starts immediately after a Windows feature update or cumulative update.

Check whether the device manufacturer has released a compatible driver for the installed Windows version.

Symptoms of INVALID_CANCEL_OF_FILE_OPEN

When this bug check occurs, Windows stops normal operation to prevent further damage from the detected kernel-level error. Common symptoms may include:

• A blue screen displaying the stop code INVALID_CANCEL_OF_FILE_OPEN.
• The hexadecimal error value 0x000000E8.
• An unexpected system restart.
• Repeated crashes during Windows startup or normal operation.
• Crashes occurring while using applications that interact with storage or files.
• Crash dump files being generated when Windows is configured to save debugging information.

Not every affected computer will exhibit all these symptoms. The actual behaviour depends on the circumstances in which the invalid driver operation occurs.

How to Troubleshoot Windows Stop Code 0x000000E8

Follow the troubleshooting steps below in order. Begin with basic checks and proceed to advanced driver analysis if the problem continues.

Step 1: Restart Windows and Check Whether the Error Repeats

If Windows restarts successfully after the blue screen, observe whether the error occurs again.

1. Allow Windows to complete the restart process.
2. Sign in normally.
3. Check whether the same blue screen appears again.
4. Note what you were doing immediately before the crash.
5. Record any recently installed applications, drivers or hardware.

A single crash does not necessarily indicate a persistent problem. Repeated occurrences require further investigation.

Step 2: Disconnect Recently Added External Devices

A newly connected device or its associated driver may be relevant to a system crash.

1. Shut down the computer properly.
2. Disconnect recently added non-essential USB devices and external peripherals.
3. Leave essential devices such as the keyboard and mouse connected.
4. Start Windows again.
5. Check whether the error occurs without the disconnected devices.

If the system becomes stable, reconnect the devices one at a time to help identify whether a particular device or its driver is associated with the problem.

Step 3: Review Recently Installed or Updated Drivers

Driver changes are an important area to investigate when a kernel-level error begins after a system modification.

1. Right-click the Start button.
2. Select Device Manager.
3. Expand the relevant device categories.
4. Identify devices whose drivers were recently installed or updated.
5. Open the device properties and select the Driver tab.
6. Review the driver provider, date and version.

If the problem started immediately after a driver update and the previous version is available, use the Roll Back Driver option where supported.

Alternatively, obtain an appropriate driver from the computer or device manufacturer's official support website. Avoid third-party driver download websites and driver-update utilities of uncertain origin.

Step 4: Check Recently Installed Applications

Review applications installed shortly before the first occurrence of the error, especially software that installs kernel-mode drivers.

Examples worth reviewing include:

• Antivirus and endpoint protection applications.
• Backup and recovery software.
• Disk encryption applications.
• Virtual disk and storage management utilities.
• File synchronization and file-system monitoring tools.

If a particular application is strongly associated with the start of the crashes, check its official support documentation for updates or known compatibility problems.

Do not uninstall essential security or storage software without first understanding the impact, especially on encrypted systems or business-critical computers.

Step 5: Install Available Windows Updates

Windows updates may include reliability improvements, security fixes and compatibility updates.

1. Open Settings.
2. Navigate to Windows Update.
3. Select Check for updates.
4. Review the available updates.
5. Install appropriate updates and restart the computer if required.

Also check the computer manufacturer's support website for firmware and driver updates specifically intended for your model.

If the error began immediately after a particular update, investigate that update rather than assuming that installing additional updates will necessarily resolve the problem.

Step 6: Examine Windows Crash Dump Files

Crash dump analysis is one of the most useful diagnostic approaches for this particular bug check because the error identifies a driver-level problem.

Windows may store crash information in the following locations:

• C:\Windows\Minidump\ – Contains small memory dump files, when configured.
• C:\Windows\MEMORY.DMP – Common location for a kernel or complete memory dump, depending on system configuration.

To investigate the dump file, use Microsoft's Windows Debugger (WinDbg).

1. Install WinDbg from the official Microsoft distribution.
2. Launch WinDbg.
3. Open the relevant crash dump file.
4. Allow the debugger to load the required symbols.
5. Enter the following command in the debugger command window:

!analyze -v

Review the analysis output for the bug check code, parameters, stack trace and any identified driver or module.

Pay particular attention to:

• BUGCHECK_CODE: Confirms the reported bug check.
• BUGCHECK_P1 and BUGCHECK_P2: Provide the first and second bug check parameters.
• MODULE_NAME: Identifies a module associated with the crash analysis, when available.
• IMAGE_NAME: Shows the image associated with the identified module, when available.
• STACK_TEXT: Provides the recorded call stack.
• Probably caused by: Provides a debugger-generated lead, not necessarily definitive proof of responsibility.

For this bug check, Microsoft defines parameter 1 as the file object passed to IoCancelFileOpen and parameter 2 as the device object passed to the same routine. Parameters 3 and 4 are reserved.

A module appearing in the crash report is a starting point for investigation, not automatic proof that it is defective. Kernel dump analysis may require additional investigation of the call stack and driver behaviour.

Step 7: Use System File Checker and DISM

Although Microsoft documents this bug check as a driver-related invalid file-object operation, checking Windows component integrity may be useful if there are additional indications of operating system corruption.

Open Command Prompt or Windows Terminal as an administrator and run:

DISM.exe /Online /Cleanup-Image /RestoreHealth

Wait for the operation to finish. Then run:

sfc /scannow

System File Checker checks protected Windows system files and attempts to repair corrupted files using available repair sources.

Restart Windows after both operations have completed and check whether the system remains stable.

Important: These commands do not directly identify or repair a defective third-party driver. They are supplementary system-integrity checks, not a guaranteed fix for bug check 0xE8.

Step 8: Test in Safe Mode

Safe Mode starts Windows with a limited set of drivers and services. It can help determine whether the problem is associated with software or drivers that do not load in this environment.

1. Open Settings.
2. Navigate to System > Recovery.
3. Under Advanced startup, select Restart now.
4. After the restart, select Troubleshoot > Advanced options > Startup Settings.
5. Select Restart.
6. After the computer restarts, press the appropriate key for Safe Mode, usually 4 or F4.

Observe whether the crash occurs in Safe Mode.

If Windows is stable in Safe Mode, this may indicate that a driver, service or application not loaded in Safe Mode is involved. It does not conclusively establish the cause.

Advanced Troubleshooting for IT Professionals

Analyze Bug Check Parameters

Microsoft documents the following parameters for INVALID_CANCEL_OF_FILE_OPEN:

Parameter	Description
Parameter 1	The file object passed to IoCancelFileOpen.
Parameter 2	The device object passed to IoCancelFileOpen.
Parameter 3	Reserved.
Parameter 4	Reserved.

The first two parameters provide information about the objects involved in the invalid operation. They should be interpreted in the context of the crash dump and debugger output.

Investigate Third-Party Kernel Drivers

Administrators should review installed kernel-mode drivers and identify components that interact with file operations.

Useful diagnostic activities include:

• Reviewing recently installed driver packages.
• Checking third-party file-system filter drivers.
• Comparing driver versions with the manufacturer's supported releases.
• Examining multiple crash dumps for recurring module names and call-stack patterns.
• Checking whether the same crash occurs after a specific software or driver change.

Do not remove unfamiliar drivers simply because they appear in a driver listing. Determine their associated software and operational purpose before making changes.

Use Driver Verifier Only When Necessary

Driver Verifier is a Windows diagnostic utility that can monitor selected drivers for certain illegal operations and other driver-related problems.

It is intended primarily for driver developers and experienced troubleshooters. Incorrect use can cause additional blue screens or prevent Windows from starting normally.

Before using Driver Verifier:

• Ensure that important data is backed up.
• Confirm that Windows Recovery Environment or another recovery method is available.
• Identify the third-party driver that needs investigation.
• Avoid enabling verification indiscriminately for all drivers on a production computer.
• Understand how to disable Driver Verifier if startup problems occur.

Driver Verifier should be used as a targeted diagnostic measure, not as a routine repair procedure.

How to Prevent INVALID_CANCEL_OF_FILE_OPEN Errors

Although this bug check is associated with an invalid operation by a driver, the following practices can help reduce driver-related system instability:

• Install device drivers from official manufacturer websites or trusted Windows Update channels.
• Use drivers that are compatible with the installed Windows version.
• Keep storage, backup and security applications updated.
• Avoid installing multiple applications that provide overlapping low-level storage or file-system functions unless compatibility is established.
• Review driver changes after major Windows updates.
• Maintain regular backups of important files.
• Monitor repeated blue screens instead of treating every restart as an isolated incident.
• Retain crash dump files for technical investigation.

When Should You Contact Technical Support?

Contact the computer manufacturer, software vendor or a qualified Windows kernel debugging professional if:

• The computer repeatedly displays the same 0x000000E8 stop code.
• Windows cannot start normally.
• Crash dump analysis identifies a driver belonging to a critical device or business application.
• The error continues after relevant driver updates or rollbacks.
• The affected computer runs business-critical applications or production services.
• You cannot safely identify or remove the suspected driver.

Provide the support team with the exact stop code, Windows version and build, recent system changes, relevant driver versions and available crash dump files. This information can help narrow down the investigation.

Frequently Asked Questions (FAQs)

1. What does INVALID_CANCEL_OF_FILE_OPEN mean?

It means Windows detected that an invalid file object was passed to the kernel routine IoCancelFileOpen. Microsoft identifies the driver that called this routine as responsible for the invalid operation.

2. Is error 0x000000E8 related to a corrupted file?

Not necessarily. Despite the word FILE in the error name, the documented problem involves an invalid kernel file object passed by a driver. It does not automatically mean that a personal document, folder or disk file is corrupted.

3. Can an outdated driver cause this blue screen?

A driver compatibility or implementation problem is a reasonable area to investigate. However, the stop code alone does not establish that the driver is outdated. Crash dump analysis is needed to identify the responsible component.

4. Does this error indicate a hard disk failure?

No. Microsoft does not identify hard disk failure as the documented cause of bug check 0xE8. Storage-related drivers and software may be relevant to an investigation, but a physical disk failure should not be assumed without separate diagnostic evidence.

5. Can antivirus software cause INVALID_CANCEL_OF_FILE_OPEN?

Antivirus and endpoint security products may install file-system filter drivers. Such drivers can be investigated if crash dump evidence points to them, but antivirus software is not established as the cause in every occurrence of this error.

6. Where can I find the crash dump file?

Small memory dumps are commonly stored in C:\Windows\Minidump\. A kernel or complete memory dump may be stored as C:\Windows\MEMORY.DMP, depending on the configured dump type.

7. Will reinstalling Windows fix error 0x000000E8?

Reinstalling Windows is not a guaranteed solution. If an incompatible or defective third-party driver is reinstalled afterward, the problem may return. Identify the responsible driver before considering a clean installation.

8. Is 0x000000E8 a Windows hardware error?

It is a Windows kernel bug check associated with an invalid driver operation. The documented cause is a driver passing an invalid file object to IoCancelFileOpen. The code alone does not establish a hardware failure.

Official References

• Microsoft Learn – Bug Check 0xE8: INVALID_CANCEL_OF_FILE_OPEN
• Microsoft Support – Troubleshooting Windows Unexpected Restarts and Stop Code Errors
• Microsoft Learn – Windows Debugging
• Microsoft Learn – Driver Verifier
• Microsoft Support – Use System File Checker to Repair Missing or Corrupted System Files

Key Takeaways

Windows stop code 0x000000E8 – INVALID_CANCEL_OF_FILE_OPEN indicates an invalid file object was passed to the IoCancelFileOpen routine. Microsoft identifies the calling driver as responsible for the invalid operation.

The most effective troubleshooting approach is to examine recent driver and software changes, investigate relevant file-system and storage components, and analyze Windows crash dump files using WinDbg. Avoid assuming that the error indicates disk failure or corrupted personal files.

Accurate identification of the responsible driver is more useful than applying generic BSOD fixes without understanding the underlying problem.