FltMgr.sys is a “system” file used by Windows to help control various aspects of your hard drives & files. Its official name is the “Microsoft Filesystem Filter Manager” and its main duty in the operating system is make sure that the data written to the hard drive is correct and not corrupted. The fltmgr.sys error is caused when Windows cannot read or process files that are on the hard drive, usually because the File System Manager is damaged or unreadable. If this is the case, it can cause hard drives to stop working and the blue screen to appear.
What Causes FltMgr.sys Errors?
The cause of the fltmgr.sys errors are mainly down to the file being corrupted or unreadable. If the file is corrupted, you will receive this error continuously…. But the most common cause of this error is a temporary problem which will a simple restart of your PC will fix. You can follow the steps below to fix the error you’re seeing:
How To Fix FltMgr.sys Errors
Step 1 – Restart Your PC
It may seem a simple step, but it can be the case that the File System Manager was not loaded properly when the system booted up. This could have been because of a new update causing the file to skip its loading process, or it could have just been a one off error. In any case, if you have any doubts, you should just restart your PC. This will clear the system’s RAM and provide another chance for it to boot up cleanly. If this doesn’t occur, carry on to step 2.
Step 2 – Check All Hardware And Hard Drives Are Fully Functional
If the hard drives are not connected properly in your system, then this is what could be causing the fltmgr.sys file to not load as it should. It could also mean, if the C drive is connected but others aren’t, that the fltmgr.sys file cannot read the other hard drives correctly and therefore cause the fltmgr.sys blue screen.
You should always be aware of any strange sounds coming from your system, as the hard drive and the fans are the only moving parts. If there is a strange noise, then it could indicate something is wrong with your hard drive. Locate the noise, and if it is the hard drive, make sure you pin point which one it is and test it. You should also check your cabling as a loose cable can cause the hard drive to become unreadable.
Step 3 – Clean The Registry
The ‘registry’ is a central database for the Windows system, where vital files, settings & options are all stored for your PC. This central database is what Windows uses to help it run as smoothly and quickly as possible – but is also a big cause of errors. Although every Windows system & software uses the registry each time you use your computer, the fact is that this database often gets damaged – leading your PC to take longer to run the processes it needs, and use the files it requires. If you’ve tried the above two steps and they have not done anything, then it’s strongly advised that you clean out the registry of your system by using a “registry cleaner” tool to ensure all the parts of it are working 100% correctly. You can download our recommended registry cleaner from the bottom of this page.
Step 4 – Repair Windows
If you are receiving this error constantly, and have tried all the above solutions, it could well be that your system is actually corrupted. This can happen for a number of reasons, such as a power failure during an update or a virus that has corrupted files on your PC.
A repair of Windows is generally a good idea if you feel that the fltmgr.sys file is corrupt. It will replace the file with a fresh one and also provide a smoother system to operate with. You will need to use your Windows CD that came with your system to repair your system.