How to Repair MpOAV.dll? Download Now

Sometimes Windows system displays error messages regarding corrupted or missing MpOAV.dll 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 MpOAV.dll file can therefore effect in failed execution of the started process.

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

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

User popularity

3.1 Scanning for malicious software
3.2 System and driver update
3.3 System File Checker tool
3.4 System recovery

4 Download MpOAV.dll

4.1 List of MpOAV.dll file versions

File info

General information
Filename	MpOAV.dll
File extension	DLL
Type	Dynamic Link Library
Description	Dynamic Link Library

Software
Program	Windows 10
Software	Windows
Author	Microsoft
Software version	10

Details
File size	96160
Oldest file	2008-01-21
Latest file	2017-03-18

Most common MpOAV.dll file related problems

There are various types of errors related to MpOAV.dll file. MpOAV.dll 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 MpOAV.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

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

MpOAV.dll

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

Problems related to MpOAV.dll 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 MpOAV.dll 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.

How to fix MpOAV.dll errors in just few steps?

Remember, before taking any action related to system files perform a backup copy of your data!

MpOAV.dll 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

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with MpOAV.dll 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.

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

Go to the Windows "Start" menu
Type "Windows Update" in the search field
Choose the appropriate software program (name may vary depending on your system version)
Check if your system is up to date. If any unapplied updates are listed, install them immediately.
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 MpOAV.dll 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 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 MpOAV.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the MpOAV.dll file with properly working version. To use the tool:

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

Step 4: Restoring Windows system

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

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

If all the above-mentioned methods failed and the MpOAV.dll 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 MpOAV.dll file

The last solution is to manually download and replace MpOAV.dll 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 MpOAV.dll file.

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

Windows 10: C:\Program Files\Windows Defender\
Windows 8.1: C:\Program Files\Windows Defender\
Windows 8: 1: C:\Program Files\Windows Defender\
Windows 7: C:\Program Files\Windows Defender\
Windows 7: C:\Program Files\Windows Defender\
Windows Vista: ---
Windows Vista: ---

If the steps did not solve your MpOAV.dll 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 MpOAV.dll

System Windows 10

File size 96160 bytes

Date -0001-11-30

Download

File details
	MD5	368464641f57a9b2053b40a6baa6cb94
	SHA1	ed2754a622ae42d42bc77d3d5cef4091f4295103
	SHA256	b358a8d454511d304741e10decf186a1a951480273033a8dd141e2069f20d9ee
	CRC32	f2c7a7d7
	Example file location	C:\Program Files\Windows Defender\

Filename MpOAV.dll

System Windows 8.1

File size 115648 bytes

Date -0001-11-30

Download

File details
	MD5	5d2445f580cd649dbe9211e77c7ef674
	SHA1	a2d9cf3c45351cfcf10477515f33035eda6b1816
	SHA256	30094cdd0a88864a7d53ad65effda22da25a32d1dc8c97ee23eabe33ced6cb88
	CRC32	ee6e0d95
	Example file location	C:\Program Files\Windows Defender\

Filename MpOAV.dll

System Windows 8

File size 58368 bytes

Date -0001-11-30

Download

File details
	MD5	4c5098ecc449484990948cf56da701c1
	SHA1	12afd33ba050e45ebe543da2aa359e69b23e912e
	SHA256	7f9d1a5ce993b5469f7e7061c82b8937053488dcb2e0c5c77c5b611e1700dc2d
	CRC32	05a5e7f8
	Example file location	1: C:\Program Files\Windows Defender\

Filename MpOAV.dll

System Windows 7

File size 52224 bytes

Date -0001-11-30

Download

File details
	MD5	5a4a633b3a84086cab6ad61ba54c8d0c
	SHA1	03f5873612e915d39ad1a090808dc52a463af8ce
	SHA256	9ba0826ce20775a5e951a6c28f6c8e8bf0b3bd19b175e6561a5b77bea60eaa12
	CRC32	8f032de4
	Example file location	C:\Program Files\Windows Defender\

Filename MpOAV.dll

System Windows 7

File size 54784 bytes

Date -0001-11-30

Download

File details
	MD5	79e485e1361da3cbe01ff760867f1d26
	SHA1	da2ff7ed8ec8a7f9411c098b1c2cdcfc1dc6fad5
	SHA256	1ce514071131633b675307c9b0c20d82125ea33530f8dbd1a3d45542d672c930
	CRC32	e31d3cff
	Example file location	C:\Program Files\Windows Defender\

Filename MpOAV.dll

System Windows Vista

File size 90680 bytes

Date -0001-11-30

Download

File details
	MD5	b7dc98f6f4e7611a9c0849945fb28fb9
	SHA1	730c3a8a676493239c4e7b3b2c555b9fe970a1b2
	SHA256	63bc9fb8d14200821eb18af0762f47b9bc1576145977cdb45b228427fe3e574d
	CRC32	b8fe2f70
	Example file location	---

Filename MpOAV.dll

System Windows Vista

File size 114232 bytes

Date -0001-11-30

Download

File details
	MD5	e19e5469ed3a3d98b4ef0ceb048eeab6
	SHA1	1ffd0a88e4d79e206ab1d41ba76d69b0fa8ec9f1
	SHA256	beb7ec4aeeabf8c3f2b94a6a8736665cf2c5053e41465b54e4a7c3d853cc8df3
	CRC32	7bfecf07
	Example file location	---