What's avgmfi64.sys? Best How to Fix avgmfi64.sys Error Guide

If you've found yourself here, I'm guessing that you're getting avgmfi64.sys error message and want to find an effective solution to fix this error. You should know for sure that you have to fix this error ASAP, otherwise your machine will be broken sooner or later.

Possible avgmfi64.sys Error Messages

  • The module "avgmfi64.sys" was loaded but the entry-point DllRegisterServer was not found. Make sure that "avgmfi64.sys" is a valid DLL or OCX file and then try again.
  • Windows could not start because avgmfi64.sys file is missing or corrupt.
  • Runtime Error! Program [path]\avgmfi64.sys. An application has made an attempt to load the C runtime library incorrectly. Please contact the application's support team for more information.
  • [path]\avgmfi64.sys is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media.
  • Error loading [path]\avgmfi64.sys. The specified module could not be found.
  • This application has failed to start because avgmfi64.sys was not found.
  • Can't find avgmfi64.sys

Information about avgmfi64.sys File

Filename: avgmfi64.sys (Free Scan)
File Description : AVG Resident Shield Minifilter Driver
Latest Known Version:
Product Name : AVG Internet Security
Company: -
File type : sys file
OS Infected: Windows NT/2000/2003/XP/Vista/2008/7/8
MD5: 342ac1852c44fc6dc699b3c6ac480acd
Security Level(0-5): 5
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General Causes of avgmfi64.sys Error

This avgmfi64.sys file stores important information that how the program or a Windows service needs to run. As a result, it will pop up an error message when this file is corrupt or damaged. In such circumstance, you may have a problem running the program or using the computer properly.

Most of the time, you will get an error message when there is a computer error. That error message may give you any hint on what may be wrong. Knowing the root of the problem is half the battle won when it comes to fixing the error.

Usually, avgmfi64.sys error may be caused by:
  • The registry key of avgmfi64.sys is invalid or damaged.
  • Computer malware has injected malicious code and modified avgmfi64.sys file.
  • The avgmfi64.sys file was uninstalled by other software.
  • The avgmfi64.sys file was intentionally or mistakenly deleted by other software.
  • The required version of avgmfi64.sys file is overwritten by other software.
  • There is a hardware failure, such as a bad hard disk.

How to Fix avgmfi64.sys Error?

Attention: It's not advisable to download avgmfi64.sys file from those "sys download" websites. The file from those websites are not verified by the official avgmfi64.sys developer and may be bundled with computer malware or other unwanted things. In case you really need a copy of avgmfi64.sys file, it's necessary for you to get it directly from its official resource. Now you can use the following solutions to fix avgmfi64.sys error:

1. Restart the computer

When you receive avgmfi64.sys error message, you can try to restart your machine to see if this error could be a glitch. If you can't restart it normally, you can force restart it.

2. Reinstall any recently installed or uninstalled software

Incorrect installation or uninstallation of a software may also lead to computer errors. If you start receiving avgmfi64.sys error after you install or uninstall a software, then you can try uninstalling or installing that software again to see if it can fix the problem or not.

3. Fix corrupt or invalid registry entries of avgmfi64.sys file

The registry is the place where most computer errors like avgmfi64.sys error come from. When a software was installed or uninstalled incorrectly, sometimes there will be some invalid or corrupt registry entries of some software files like avgmfi64.sys are left in the registry. That's why it's necessary to regularly clean those invalid and corrupt registry entries and keep the registry compact so that such errors can be reduced and your computer performance can be improved.

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Attention: The system registry stores all information that all software and hardware require to run. So it's not suggested that you clean the system registry manually. You should know that a slight mistake may make your software unpredictable or even crash your system.

4. Install or roll back certain device driver to a previous version

Some newly released device drivers are not as compatible with the old hardware devices as the previous version. If you receive avgmfi64.sys error after you update certain device driver, it's advisable for you to download and install the previous version of the driver. If you can't find it, you can "Roll Back" the driver in your Device Manager.

5. Perform a full malware scan for your computer system

It's possible that your avgmfi64.sys error may be caused by a computer malware in your computer. Those computer malware can damage, modify or even delete your files like avgmfi64.sys. Moreover, it's also possible that this avgmfi64.sys error is fabricated by the malware to frighten and coax you into purchasing its fake products. Click and download this powerful Virus Removal Tool to free check your system.

6. Use Windows System Restore to undo recent changes in the system

System Restore is a useful recovery tool in Windows that enables you to undo changes made to your system and software. But this works only if you have created a restore point when everything worked fine. If you restore your system to the earlier point, you will lose the software and data you got after this restore point.

1). Open Control Panel

For Windows 8 Users

Hold Windows key + X and then click Control panel

win8 control panel

For Windows 7 and Vista Users:

Click Start button and click Control Panel

win7 control panel

2). Select View by Large Icons and then click Recovery

control panel recovery

3). Click Open System Restore

open system restore

4). After the dialogue pops up, click Next button to proceed

restore system files settings

5). Choose a restore point and then click Next button to continue

choose restore point

6). Confirm your restore point and click Finish button

confirm restore point

7. Repair your Windows Operating System

Rather than wiping out your hard disk and reinstalling your system, you can perform a startup repair to repair your corrupt Windows system files that may be associated to avgmfi64.sys file. By doing so, you don't necessarily lose your software, personal information and settings.

8. Run the sfc /scannow command to repair the system files

The sfc command is also known as System File Checker which is a very helpful utility to verify and replace important system files. When it scans the whole system and finds any missing, corrupt or damaged system files, it will replace the problematic files. This can fix the error if the file is provided by Microsoft.

Video of How to run sfc /scannow command in Windows 7:

Click Here to see the video of How to run sfc /scannow command in Windows 8

9. Adjust RAM memory

Some computer errors happen when the RAM memory loose. So sometimes removing RAM memory and then inserting it again could fix the error.

10. Examine hardware devices

If you still receive avgmfi64.sys error message after you perform a clean installation of your Operating System, it's certain that this error should be caused by a bad hardware. You can test each piece of hardware devices and find out and then replace the problematic one.

Recommended Solution:

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Still Having avgmfi64.sys Problem?

In case the above methods could not help you fix your avgmfi64.sys problem, please contact us via email with the screen shot of your avgmfi64.sys error pop-up and describe how you got this error and the solutions you've tried if any.





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---Howard P, US

My laptop often freezes every now and then, so I thought it's the virus infections. But my Norton could not detect anything. Then I came to your website and tried your steps. I can't believe it found so many errors in my laptop! After fixing them, my laptop runs fast again! Thank you!

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I don't know much about computers. You guys are so kind of writing the fix guide in plain English so that people like me can easily follow it and fix my computer. Thanks a million!

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