How to Fix fltmgr.sys BSOD Error on Windows: A Comprehensive Guide

This article delves into the fltmgr.sys BSOD error, providing insights into its causes, symptoms, and solutions. From updating device drivers to using recovery tools like MyRecover, find comprehensive guidance to resolve this troublesome issue.


By Zoey / Updated on February 5, 2024

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Have you ever been in the middle of an important task on your Windows PC when suddenly, out of nowhere, you're greeted by the dreaded blue screen of death (BSOD) with an error message mentioning "fltmgr.sys"? If so, you're not alone. This perplexing error, often referred to as the "fltmgr.sys BSOD error," can be a source of frustration for many Windows users. However, fear not! In this comprehensive guide, we'll delve deep into the world of fltmgr.sys errors, exploring their causes, symptoms, and, most importantly, how to fix them effectively.

fix fltmgr sys bsod

Understanding the fltmgr.sys BSOD Error

Before diving into the solutions, let's first understand what the fltmgr.sys BSOD error is all about. The fltmgr.sys file is a crucial component of the Windows operating system, responsible for managing file operations. However, when this file encounters an issue or becomes corrupted, it can lead to the infamous blue screen of death, halting your system's operation and displaying an error message that mentions "fltmgr.sys."

What Causes the fltmgr.sys BSOD Error?

Now that we know what the error is, let's explore the factors that can trigger it. The fltmgr.sys BSOD error can occur due to various reasons, including:

  • Corrupted System Files: If the fltmgr.sys file itself or other system files become corrupted, it can result in the BSOD error.
  • Outdated or Faulty Device Drivers: Device drivers play a crucial role in the proper functioning of hardware components. Outdated or faulty drivers can conflict with the fltmgr.sys file, leading to the error.
  • Hardware Issues: Hardware problems such as faulty RAM modules or hard drives can also contribute to the fltmgr.sys BSOD error.
  • Malware or Virus Infections: In some cases, malware or virus infections can corrupt system files, including fltmgr.sys, triggering the BSOD error.

Symptoms of the fltmgr.sys BSOD Error

Identifying the fltmgr.sys BSOD error is essential for troubleshooting. Here are some common symptoms to watch out for:

  • Blue Screen of Death (BSOD): Your system may crash, displaying a blue screen with an error message mentioning "fltmgr.sys."
  • Frequent System Crashes or Freezes: If you experience frequent system crashes or freezes, especially accompanied by the BSOD, it could indicate the presence of the error.
  • Slow Performance or System Lag: The presence of the fltmgr.sys BSOD error may lead to sluggish performance or system lag, making tasks slower to execute.
  • Automatic Restarts: Your system may automatically restart without warning, particularly when the error occurs.

How to Fix fltmgr.sys BSOD Error

Now that we've identified the causes and symptoms, let's explore effective methods to fix the fltmgr.sys BSOD error and get your Windows system back on track:

Method 1: Update Device Drivers

Outdated or incompatible device drivers are a common cause of the fltmgr.sys BSOD error. To update your drivers:

1. Press Win + X and select Device Manager from the menu.

2. In the Device Manager window, expand the categories to locate the device drivers.

3. Right-click on the device driver you want to update and select "Update Driver."

4. Follow the on-screen instructions to complete the driver update process.

Method 2: Run Windows Memory Diagnostic Tool

Faulty RAM modules can also contribute to the fltmgr.sys BSOD error. To run the Windows Memory Diagnostic tool:

1. Type "Windows Memory Diagnostic" in the Windows search bar and select the corresponding app from the search results.

2. Choose the option to "Restart now and check for problems."

3. Your system will restart, and the Windows Memory Diagnostic tool will automatically run to check for memory issues.

Method 3: Check Disk for Errors

Corrupted disk sectors can cause the fltmgr.sys BSOD error. To check your disk for errors:

1. Open Command Prompt as an administrator by typing "cmd" in the Windows search bar, right-clicking on Command Prompt, and selecting "Run as administrator."

2. In the Command Prompt window, type the command "chkdsk /f /r" (without quotes) and press Enter.

3. Follow the on-screen instructions to allow Windows to check and repair disk errors. This process may take some time, depending on the size of your disk and the extent of the errors found.

Method 4: Restore System to a Previous State

If you started experiencing the error after recent changes to your system, such as software installations or updates, you can use System Restore to revert your system to a previous stable state:

1. Type "System Restore" in the Windows search bar and select the corresponding app from the search results.

2. Follow the prompts to choose a restore point from a date when your system was functioning correctly.

3. Confirm your selection and follow the on-screen instructions to initiate the system restore process. Your system will restart once the process is complete.

Method 5: Use MyRecover to Recover Lost Data

In some cases, encountering the fltmgr.sys BSOD error may lead to data loss or corruption. If you've lost important files due to the error, you can use a reliable data recovery tool like MyRecover to retrieve them:

1. Download and install MyRecover from the official website.

2. Launch the application and select the drive or storage device from which you want to recover data.

3. Initiate the scanning process, and MyRecover will search for lost or deleted files on the selected drive.

4. Once the scanning is complete, preview the recoverable files and select the ones you want to restore.

5. Follow the on-screen instructions to complete the data recovery process. Make sure to save the recovered files to a different storage device to avoid overwriting data.


Encountering the fltmgr.sys BSOD error can be a frustrating experience, but with the right knowledge and troubleshooting techniques, you can resolve it effectively. By understanding the causes and symptoms of the error and following the practical solutions outlined in this guide, you can restore your Windows system to full functionality. Remember to stay proactive with system maintenance, keep your device drivers updated, and utilize tools like MyRecover for data recovery needs.


Q: Can malware cause the fltmgr.sys BSOD error?

A: Yes, malware or virus infections can corrupt system files, including fltmgr.sys, leading to the BSOD error. It's crucial to maintain robust antivirus protection and regularly scan your system for malware.

Q: What should I do if none of the methods mentioned in the guide fix the fltmgr.sys BSOD error?

A: If you've tried all the troubleshooting methods outlined in the guide and still encounter the error, consider seeking assistance from a professional technician or contacting Microsoft Support for further guidance.

Q: Is it safe to use third-party data recovery tools like MyRecover?

A: Yes, reputable data recovery tools like MyRecover are safe to use and can help recover lost or deleted data caused by the fltmgr.sys BSOD error.

Zoey · Editor
Zoey works as an English editor of AOMEI Technology. She provides tech information about backup and restore, mobile data transfer, and so on for AOMEI. She hopes that her articles will be greatly helpful for users. She is fond of music, film, and photography.