What is fltmgr.sys stop code? Here’s how to fix it on Windows 10 and 11

The fItmgr.sys file, also known as the Microsoft File System Filter Manager file that is responsible for ensuring that data on hard drives is readable and accurate. If your operating system fails to read the data on your hard drive due to a problem with the fItmr.sys file, you may encounter a Blue Screen of Death (BSOD) that lists fItmr.sys as the culprit.

These problems are usually caused by damaged/outdated drivers or hardware issues. Below, we have listed several troubleshooting methods that you can try to fix the blue screen under discussion.

1. Check for device problems

Before going ahead with this method, we recommend that you restart your computer. There have been cases where the error occurred because the fItmr.sys file was not running properly. If the issue occurs after booting up as well, then continue with the steps below.

The first thing that you should do is to check your computer for any faulty hardware that might be causing the problem. If the error started occurring after swapping out the old hardware components with the new ones, that could be causing the problem.

You can try switching back to the old devices or test the new device on a different device.

Another thing that you can do in this regard is to run a CHKDSK scan, which can analyze your hard drive for errors and fix specific errors. Follow these steps below to do so:

  1. press Win + R. To open Run.
  2. Writes poultice In the Run text field and press Ctrl + Shift + Enter To run a command prompt as an administrator.
  3. In Command Prompt window, type the command mentioned below and hit Enters to implement it.
    chkdsk c: /f /r​​​

Once the command is executed, close Command Prompt and check if the problem is resolved.

2. Repair device drivers

If the problem is not hardware related, then the next thing you should check are device drivers. Unfortunately, this error code does not identify which driver might be a problem, so we will try to update all important drivers.

You can do this manually using Device Manager, or you can get a third party utility that can scan your system for outdated or corrupt drivers and then update/reinstall them.

As for the former, you can head over to our guide dedicated to updating drivers in Windows. If the problem started after updating/installing a driver, you can downgrade or uninstall the problem driver and see if that helps.

However, if you want to leave this functionality to a third-party tool, here are some options to consider:

  • drivx – This tool will scan the system for outdated/disabled drivers and recommend updates that have been officially released by the manufacturer. All you have to do is give the tool access to the necessary files, and it will automatically install the drivers for you.
  • ease of driving – It’s another simple tool that identifies which drivers need to be updated or reinstalled. It comes in two versions; Free and paid.
  • Ashampoo Driver Updater This program scans your hardware and drivers, then installs the latest updates for any outdated drivers that may be hidden in the system.

For a more comprehensive list, you can head over to our guide on the best driver update software for Windows.

3. Undo recent changes

If the error started appearing after making some changes to the system, you can try to undo it and check if that fixes the problem.

If this scenario is applicable, the first thing we recommend is to uninstall the latest Windows updates. Microsoft updates can be buggy at times and can cause new problems within the system instead of addressing existing ones.

If uninstalling the latest updates did the trick, the next thing we will do is to check if there are any new or old third party apps causing the problem. For this purpose, we will first boot Windows in Safe Mode.

This mode boots Windows with only a basic set of drivers and software, making it easier to determine whether or not a background application is the culprit.

Here’s how to boot Windows in safe mode:

  1. press Win + R. To open Run.
  2. Writes msconfig Run and click Enters.
  3. In the System Configuration window, go to File Boot tab and check the box associated with Safe boot.

  4. Next, choose minimum in the secure boot option.
  5. click Progressing > yes To save the changes, then restart your computer.

Upon restart, Windows will automatically boot into safe mode. Once you are in safe mode, check if the problem appears again. If not, you can try to uninstall any recently installed apps as there is a good chance that they are the culprit.

If you are not sure about the applications, go to File Services tab in the System Configuration dialog box.

Now divide the services into two parts and enable all the services in the first part. Wait to see if the error pops up again. As such, keep narrowing down the culprit until you find it.

If the above methods did not solve the problem for you, you can report the problem to the official Microsoft support team. We hope that they can help you determine the exact cause of the problem and suggest you the appropriate fix accordingly. Alternatively, you can also use the Event Viewer utility on Windows to check the BSOD log file to identify the culprit yourself.

fltmgr.sys stop code, now fixed

We hope that one of the above methods has resolved your issue. We highly recommend that you update your device drivers at all times to avoid such problems in the future. It is also important to regularly install available system updates, as they contain bug fixes and protect your system.

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