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Fix fltMgr.sys Errors

Sometimes Windows system displays error messages regarding corrupted or missing fltMgr.sys files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent fltMgr.sys file can therefore effect in failed execution of the started process.

fltMgr.sys file Microsoft Filesystem Filter Manager. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of fltMgr.sys related errors on your device. You can also download fltMgr.sys file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows XP devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows XP

File info

General information
Filename fltMgr.sys
File extension SYS
Description Microsoft Filesystem Filter Manager
Software
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
Details
MIME type application/octet-stream
File type Driver
System Windows NT 32-bit
Copyrights © Microsoft Corporation. All rights reserved.
Character set Unicode
Language cod English (U.S.)
fltMgr.sys

There are various types of errors related to fltMgr.sys file. fltMgr.sys file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to fltMgr.sys file. If you encounter one listed below (or similar), please consider the following suggestions.

  • fltMgr.sys is corrupted
  • fltMgr.sys cannot be located
  • Runtime Error - fltMgr.sys
  • fltMgr.sys file error
  • fltMgr.sys file cannot be loaded. Module was not found
  • cannot register fltMgr.sys file:
  • fltMgr.sys file could not be loaded
  • fltMgr.sys file doesn't exist

fltMgr.sys

Error

Application could not be started because fltMgr.sys file is missing. Reinstall the application to solve the problem.

OK

Problems related to fltMgr.sys can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing fltMgr.sys file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

fltMgr.sys file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Virus Scan

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with fltMgr.sys file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Windows Update

Installing relevant Microsoft Windows patches and updates may solve your problems related to fltMgr.sys file. Use dedicated Windows tool to perform the update.

  1. Go to the Windows "Start" menu
  2. Type "Windows Update" in the search field
  3. Choose the appropriate software program (name may vary depending on your system version)
  4. Check if your system is up to date. If any unapplied updates are listed, install them immediately.
  5. After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of fltMgr.sys or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to fltMgr.sys file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the fltMgr.sys file with properly working version. To use the tool:

  1. Go to the Windows "Start" menu
  2. Type "cmd" in the search field
  3. Locate "Command Prompt" result – don't run it yet:
  4. Click the right mouse button and select "Run as Administrator" option
  5. Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Windows Recovery

Another approach is to restore system to previous state, before the fltMgr.sys file error occured. In order to restore your system, follow the instructions below

  1. Go to the Windows "Start" menu
  2. Type "System Restore" in the search field
  3. Start the system restore tool – it's name may differ depending on version of the system
  4. The application will guide you through the process – read the messages carefully
  5. After the process has finished, restart your computer.

If all the above-mentioned methods failed and the fltMgr.sys file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace fltMgr.sys file

The last solution is to manually download and replace fltMgr.sys file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded fltMgr.sys file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of fltMgr.sys file example directory paths.

  • Windows 10: C:\Windows\System32\drivers\
  • Windows 8.1: C:\Windows\System32\drivers\
  • Windows 8: 1: C:\Windows\System32\drivers\
  • Windows 7: C:\Windows\System32\drivers\
  • Windows Vista: C:\Windows\System32\drivers\
  • Windows XP: ---

If the steps did not solve your fltMgr.sys file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename fltMgr.sys
System Windows 10
File size 293280 bytes
Date 2017-03-18
File details
MD5 80cb400fb67cdfec28b342c2ea9f6e25
SHA1 de6adc56b508818d73f47b5fff698f4cca99d175
SHA256 69e311e4f9c3ae4d1b0e8c5090bccec1b4d32fcd23a3049976db346446a67792
CRC32 e0bf7f99
Example file location C:\Windows\System32\drivers\
Filename fltMgr.sys
System Windows 8.1
File size 270144 bytes
Date 2014-11-21
File details
MD5 b6646d41bc0f4c322f5230a3aba05468
SHA1 1cf03803e2b5c01058d3ea287b722b3b211c68dc
SHA256 3b8426d5150c196c696215c35f3aa3757b2dc309202fc20ca821d967c443561b
CRC32 75084a46
Example file location C:\Windows\System32\drivers\
Filename fltMgr.sys
System Windows 8
File size 293104 bytes
Date 2012-07-26
File details
MD5 13c0b6f6efd0d5c6871c07b56cb5403d
SHA1 b9a04190a3a49431df55ff6a78b8f01aa1067c3c
SHA256 7d099f06cb9fe72b36477d60a8b6dadae3fdb6b20d40f0d1620a471e88ee68a5
CRC32 f28a1563
Example file location 1: C:\Windows\System32\drivers\
Filename fltMgr.sys
System Windows 7
File size 289664 bytes
Date 2010-11-21
File details
MD5 da6b67270fd9db3697b20fce94950741
SHA1 929738d7293cb8a2babec698e586e7c841dcb61e
SHA256 f621a4462c9f2904063578c427faf22d7d66ae9967605c11c798099817ce5331
CRC32 7ffa5b35
Example file location C:\Windows\System32\drivers\
Filename fltMgr.sys
System Windows Vista
File size 275432 bytes
Date 2009-04-11
File details
MD5 e3041bc26d6930d61f42aedb79c91720
SHA1 45066c302f6e0c6348652ca21b8f1c32886ae326
SHA256 3556c033bb78445ec8b2f98a82455914764afc70cbff634ddbd3539885a1e457
CRC32 d9414f5b
Example file location C:\Windows\System32\drivers\
Filename fltMgr.sys
System Windows XP
File size 129792 bytes
Date 2008-04-14
File details
MD5 b2cf4b0786f8212cb92ed2b50c6db6b0
SHA1 9d951cf22a9f5dc75469f96c45cefe6c73b2047f
SHA256 280f5cf8a90f7bede73add0dd0f8952088133a7ca9a3d3b7041957e33b36845d
CRC32 dbfe6b54
Example file location ---