Experiencing a ‘KMODE EXCEPTION NOT HANDLED’ error can be a significant disruption, thrusting users into a state of confusion and urgency to resolve the issue. Often linked to system memory problems or device driver conflicts, this error results in a Blue Screen of Death (BSOD) and an abrupt halt to our computing tasks. The error name itself indicates that an exception occurred during kernel mode that wasn’t handled, potentially due to a faulty driver or a specific hardware fault.

Our collective experiences have shown us that immediate solutions focus on disabling certain Windows features like Fast Startup, which, while intended to speed up boot times, occasionally leads to these stop errors. Beyond this quick fix, addressing driver updates and conducting memory tests are substantial steps towards a long-term resolution.
Troubleshooting BSODs can be daunting; however, by adopting a methodical approach to isolating the cause, we stand a strong chance of restoring stability. The challenges lie in pinpointing the precise driver or hardware at fault, and while Windows offers built-in utilities to assist, sometimes third-party applications may offer clearer insights or easier management of system configurations to prevent future occurrences.
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Understanding Kmode Exception Not Handled
We’ll navigate through the intricacies of the ‘Kmode Exception Not Handled’ error, typically signifying a critical issue causing a system to halt unexpectedly.

Exploring the Causes
The ‘Kmode Exception Not Handled’ error, characteristically displays as a Blue Screen of Death (BSOD), primarily arises from faults within system drivers or kernel-mode programs. These drivers can range from ntfs.sys for the NT File System, netio.sys related to the network I/O subsystem, to others like ndis.sys, involved with network drivers, tcpip.sys for TCP/IP protocols, or iastora.sys associated with storage controllers.
Interpreting Error Codes
Understanding specific error codes that accompany the ‘Kmode Exception Not Handled’ message can be vital in identifying the root cause. The message may be followed by a file name, such as the aforementioned driver files, pinpointing the problematic component. For instance, if you see ‘Kmode Exception Not Handled’, followed by ‘ntfs.sys’, it suggests an issue with the NT File System driver.
| System File | Error Code | Possible Solution |
| ntfs.sys | 0x0000001E | Check disk for corruption |
| netio.sys | 0x000000D1 | Update network drivers |
| ndis.sys | 0x0000007E | Run system diagnostics |
| tcpip.sys | 0x0000000A | Repair TCP/IP stack |
| iastora.sys | 0x00000D1 | Update storage controller drivers |
We tackle BSODs methodically, using error codes as a guide to troubleshoot and address the underlying issues properly. The identification of each driver or service mentioned by the error message is our first step. Then, we proceed with targeted updates or repairs based on the individual code and corresponding advice.
Troubleshooting Strategies
We can often resolve the kmode_exception_not_handled error through a methodical approach. Here’s how to execute some established troubleshooting tactics that address common triggers of this issue.
Utilizing Windows Memory Diagnostic Tool
Entering Safe Mode
In the event of a system crash, entering Safe Mode is a reliable way to work around drivers that cause the kmode_exception_not_handled error. By starting up with a minimal set of drivers and services, we can pinpoint and resolve troublesome software. To enter Safe Mode, hold the Shift key while selecting Restart from the Start menu’s Power options.
Checking for Faulty RAM
Occasionally, the issue may stem from faulty RAM, and using an external tool like Memtest86+ can provide a more thorough analysis beyond what the Windows Memory Diagnostic Tool can offer. Download and run Memtest86+ from a bootable USB drive. This comprehensive RAM diagnostic takes several hours to complete but can pinpoint the exact memory stick causing trouble, making it easier for us to replace or reseat, if necessary.
We focus on identifying hardware problems and system configuration conflicts that could be causing the kmode_exception_not_handled error. By following these steps, we systematically eliminate potential causes and move closer to resolving the issue.
Driver Management and System Configuration
To tackle the ‘Kmode Exception Not Handled’ error, it’s crucial to handle drivers and system settings adeptly. We focus on updating and rolling back drivers, configuring system startup, and identifying unknown devices, which can be pivotal in resolving system errors and maintaining stability.
Updating and Rolling Back Drivers
Firstly, keeping our device drivers up-to-date is essential for hardware compatibility and system stability. This can be achieved through the following steps:
- Open Device Manager.
- Right-click on the device and select ‘Update Driver’.
- Choose to search automatically for updates.
If a new update causes issues, we can roll back the driver:
- Navigate to Device Manager.
- Right-click the recently updated driver.
- Select ‘Properties’ > ‘Driver’ tab > ‘Roll Back Driver’.
Configuring Startup and Recovery
A clean boot can help diagnose startup issues by loading only essential services and drivers. To perform a clean boot:
- Type ‘msconfig’ in the search box and hit enter to open System Configuration.
- Go to the ‘Services’ tab.
- Check ‘Hide all Microsoft services’ and click ‘Disable all’.
- Switch to the ‘Startup’ tab and open Task Manager to disable startup items.
- Restart your computer.
Addressing Unknown Devices
Sometimes, ‘Kmode Exception Not Handled’ errors may stem from unrecognized hardware. Here’s how we can address unknown devices in Device Manager:
- Open Device Manager.
- Look for devices with a yellow exclamation mark.
- Right-click the unknown device and select ‘Update Driver’.
- If updates don’t solve the issue, search the hardware ID online for relevant drivers.
By managing drivers properly and adjusting system configurations, we boost our odds of eliminating errors and enhancing system performance. We advise running tools like Outbyte Driver Updater for maintaining driver updates automatically. Remember, a systematic approach is key to resolving ‘Kmode Exception Not Handled’ errors.
Preventive Measures and Best Practices
To minimize the risk of encountering the ‘Kmode Exception Not Handled’ error, we must follow structured preventive measures and best practices. Let’s focus on regular system maintenance, BIOS optimizations, and Windows security enhancements.
Regular System Maintenance
Antivirus and Anti-Malware Measures: Running reliable antivirus software and performing frequent malware scans guards our system against malicious threats that can corrupt system files and lead to errors.
Optimizing BIOS and Firmware
Enhancing Windows Security
- Ensure real-time protection is active to prevent malicious activity in the background.
- Adjust power options, including disabling ‘Fast Startup’, a feature known to cause issues on boot, potentially leading to the ‘Kmode Exception Not Handled’ error.