Fix fltmgr.sys BSOD or Blue Screen Error in Windows 10

11 ways to Fix fltmgr.sys BSOD Error that commonly occurs with Page fault in nonpaged area, Irql_not_less_or_equal, System Service Exception or other in Windows 10.


fltmgr.sys is a system file that ensures all files existing on the hard drive to be in the respective directories. Full form of the file is Microsoft Filesystem Filter Manager that also makes sure that the data written to the HDD is correct and not corrupted. Error fltmgr.sys BSOD occurs when this process can’t perform its duty properly and system keeps crashing with random restarts. This blue screen of death mostly appears with Kmode exception not handled, Page fault in nonpaged area, Memory_management, and Irql_not_less_or_equal.

File System Filter Manager becomes damaged or unreadable if the communication between CPU and hardware is lost or malfunctioned. Other potential reasons that cause fltmgr.sys blue screen error is missing system components, malware infection, outdated device drivers, and cracked software programs. Sometimes, a simple restart works as a tweak to fix fltmgr.sys BSOD. On the other hand, the same blue screen of death occasionally doesn’t let you login into your system thus resolving the issue becomes difficult.

fltmgr.sys BSOD Error in Windows 10

Here is how to fix fltmgr.sys BSOD Error in Windows 10 –

1] Boot into Safe mode with Networking

To solve this Blue screen issue you need to boot in safe mode with networking in the condition you cannot access the desktop. Suppose you are able to log in after encountering fltmgr.sys BSOD error, you can directly move to method 2.

  1. Click the search icon on the taskbar.
  2. Type – advanced startup.
  3. Press – Restart now.
  4. On the coming screen, go to Troubleshoot => Advanced options => Startup Settings successively.
  5. Next, click – Restart.
  6. Once the system powers up, press 5 or f5 to enable Safe Mode with Networking.

2] Perform Virus scan

fltmgr.sys with page fault in nonpaged area, kmode exception not handled, memory_management
, or irql_not_less_or_equal might occur when malware enters the system. During this process, some fundamental elements that are necessary to make sure the smooth functioning of Windows 10 PC either go missing or become corrupted.

Threat or attack is nearly impossible for Windows 10 because the version has built-in utility Windows security that ensures online and offline safety. Despite, an outdated operating system, broken device drivers, disabled security suite oftentimes make it easy for malware to get access. So, before you try out any other solutions, it’s important to eliminate existing malware so that it can’t overspread.

  1. Press – Windows + S.
  2. Type in – Virus & threat protection.
  3. Hit – Enter.
  4. Click the link reading  – Scan options.
  5. Hit the radio button set for – Full scan.
  6. Click – Scan now.
How to Fix fltmgr.sys BSOD Error in Windows 10
  1. If the utility traces out any malware, hit – Clean Threat.
  2. Thereafter, click Remove and then Start actions.
  3. Once the removal process ends, reboot Windows.

3] Restore missing system elements

Some system files might be disappeared or misplaced due to malware infection or software conflict or other reasons. If any of these items are related to File System Filter Manager, you need to restore the missing components. System File Checker comes to the rescue in such conditions. Sfc /Scannow mainly is a command-line utility that scans the integrity to resolve the defective system files and restore lost system elements. To run the same –

  1. Click the search icon from taskbar.
  2. Type – cmd.
  3. Press – Ctrl + Shift + Enter.
  4. When User  Account Control asks for approval, click – Yes.
  5. In the elevated Command Prompt, insert – sfc /scannow.
Run sfc scannow in elevated Command Prompt
  1. Hit – Enter.
  2. After completion of the scanning process, restart the Windows PC.

4] Update Windows 10

fltmgr.sys BSOD still persists even after following the above ways then there is a chance that your system lacks some critical updates. To get –

  1. Press – Windows + I.
  2. Click – Update & Security.
  3. From the right-hand side, click – Check for updates.
  4. If there is an available patch, click – Download.
  5. After downloading when the installation process finishes, hit – Restart now.

5] Make sure all device drivers are up-to-date

Automatic update also installs OEM drivers but sometimes they are broken or incompatible. That’s why some users keep device drivers excluded from updates. There might be some other situations too when you need to search for device drivers update manually.

  1. Press – Windows key.
  2. Type – devmgmt.msc.
  3. Hit – Enter.
  4. When “Device Manager” appears, look for the device that may cause fltmgr.sys BSOD.
  5. Double-click the same.
  6. Find out which driver is causing issue or outdated.
  7. Right-click on that ‘driver’ and choose – Update driver.
  8. Opt for – Browse my computer for drivers.
  9. Click – Let me pick from a list of available drivers on my computer.
  10. Select the correct model.
  11. Hit – Next.
  12. After installing the update, reboot the device.

6] Check external hardware to fix fltmgr.sys BSOD

fltmgr.sys BSOD is often caused by connected peripherals like printers, external hard drives, second monitors, and Bluetooth devices. So, disconnecting them may solve the problem. However, you can keep the mouse and keyboard attached.

To check whether any of your connected hardware is damaged, disjoint their USB cables from the individual ports. After that, restart Windows 10 and see if the blue screen error still exists. If no, connect the peripherals one after another. In the meantime, check if any particular hardware is triggering the blue screen error.

7] Resolve disk error

Malfunctioned or corrupted hard drive can also cause fltmgr.sys BSOD. If the problem is non-physical, CHKDSK command-line can be a lifesaver, or else you will have to replace the hard disk with a new one. Disk checking utility analyzes the hard drive to find out existing error moreover fix found issue automatically. To execute the same –

  1. Open Command Prompt as administrator.
  2. Type in – chkdsk c: /f /r.
  3. Hit – Enter.
fltmgr.sys BSOD - Check for hard disk error

8] Replace corrupted fltmgr.sys

To replace the original fltmgr.sys that is probably corrupted, you need to download the file first and then insert it into the correct directory. This procedure is super easy if follow the below steps precisely. Steps are as followed –

  1. Download – fltMgr file.
  2. Unzip the file and copy fltmgr.sys.
  3. Visit the fltmgr.sys location folder –  C:\Windows\System32\drivers.
  4. Delete the existing file paste the downloaded one.

9] Reinstall Microsoft Office access to fix fltmgr.sys BSOD

Many Windows 10 users reported that they started finding fltmgr.sys BSOD after installing Microsoft office access program. If the same happens to you, uninstall the app first. Here’s how –

  1. Press – Windows + R.
  2. In the void text bar, put – appwiz.cpl.
  3. Click – OK.
  4. Find – Microsoft Office Access.
  5. Right-click the same and choose – Uninstall.
  6. Keep following on-screen directions to complete the removal process.
  7. Once done, restart the Windows system.
  8. Check if fltmgr.sys BSOD is fixed.
  9. Now, visit the Download Center of Microsoft.
  10. Reach to Microsoft Access 2010 Runtime segment.
  11. Choose the preferred language and click – Download.
  12. After downloading, install the program in the usual way.

10] Reset the OS

Installing new software programs or making any changes in the settings or services modify Windows components along with registry keys. If these modifications don’t go with your system, fltmgr.sys BSOD may be generated. To eliminate the blue screen error, you can reinstall Windows 10 afresh. Steps are as followed –

  1. Click – Start icon.
  2. Type – reset this PC.
  3. Hit – Enter.
  4. From the right-pane, click – Get started.
Reset Windows 10
  1. Select – Keep my files.
  2. Choose – Local reinstall.
  3. Click – Next.
  4. Hit – Reset.

11] Use Blue Screen Troubleshooter

To fix BSOD occurring on Windows 10, Microsoft offers a walkthrough troubleshooter escorting you till the end of the error. You can try the series of steps there to figure out the issue on your PC.

Go to this – BSOD troubleshoot page, select the correct reason, and follow the stepwise instructions provided there.

12] Repair Windows 10 to fix fltmgr.sys BSOD Windows 10

If you are still struggling with fltmgr.sys BSOD after trying out the above workarounds, there must be some serious corruption. This generally happens due to sudden power failure, virus attack, improper shutdown, and hardware as well as software errors.

In such a case, the last resort you can try out is repairing the Windows. This way, all defective and broken files will be replaced with fresh ones moreover the operational speed of the system will be smoother. To repair the system, you will have to use the Windows CD that comes with the device.

Methods list
1] Boot into Safe mode with Networking
2] Perform virus scan
3] Restore missing system elements
4] Update Windows 10
5] Make sure all device drivers are up-to-date
6] Check external hardware
7] Resolve disk error
8] Replace corrupted fltmgr.sys
9] Reinstall Microsoft Office access
10] Reset the OS
11] Repair Windows 10

That’s all!!

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Topics:  Windows
About Nipu
Windows 11, 10 Tweaker, and Tech Enthusiast.