How to Repair Mpdev.sys (Free File Download)

Last Updated: 11/28/2023
[Time to Read Article: 5 minutes]

mpdev.sys is considered a type of Multipath Scsi Device Filter file. It is most-commonly used in Microsoft® Windows® Operating System developed by Acronis. It uses the SYS file extension and is considered a Win32 EXE (Driver) file.

mpdev.sys was first released in the Windows 10 Operating System on 06/22/2010 with Acronis Disk Director Home 11. According to our records, this is the primary and most recent file release from Acronis.

This article discusses complete file details, SYS file troubleshooting instructions for problems with mpdev.sys, and a comprehensive set of free downloads for every file version that has been catalogued by our team.

File Analysis Provided by Jason Geater (Author)


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File Overview


General Information
File Name: mpdev.sys
File Extension: SYS file extension
Description: Multipath Scsi Device Filter
Object File Type: Driver
File Operating System: Windows NT 32-bit
MIME Type: application/octet-stream
User Popularity Rating:
 
Developer and Software Information
Software Developer: Microsoft Corporation
Software Program: Microsoft® Windows® Operating System
Legal Copyright: © Microsoft Corporation. All rights reserved.
File Details
Character Set: Unicode
Language Code: English (U.S.)
File Flags: Private build
File Flags Mask: 0x003f
Entry Point: 0x4005
Code Size: 4096


What are mpdev.sys Error Messages?


mpdev.sys Blue Screen of Death (BSOD) Errors

There are a number of reasons why you could be encountering issues with mpdev.sys. Most of the issues concerning sys files involve Blue Screen of Death (BSOD) errors. These types of mpdev.sys errors can be cause by hardware problems, outdated firmware, corrupt drivers, or other software-related (eg. Acronis Disk Director Home update) issues. Some of these errors include:

A problem has been detected and Windows has been shut down to prevent damage to your computer. The problem seems to be caused by the following file: mpdev.sys.

:( Your PC ran into a problem that it couldn't handle, and now needs to restart. You can search for the error online: [BSOD] (mpdev.sys).

<strong>STOP 0x0000001E: KMODE EXCEPTION NOT HANDLED (mpdev.sys)</strong><br /><strong>STOP 0x0000007E: SYSTEM THREAD EXCEPTION NOT HANDLED (mpdev.sys)</strong><br /><strong>STOP 0x0000003B: SYSTEM SERVICE EXCEPTION (mpdev.sys)</strong><br /><strong>STOP 0x00000050: PAGE FAULT IN A NONPAGED AREA (mpdev.sys)</strong><br /><strong>STOP 0x0000000A: IRQL NOT LESS EQUAL (mpdev.sys)</strong><br /><strong>STOP 0×0000007A: KERNEL DATA INPAGE (mpdev.sys)</strong>

It's Critical to Resolve Blue Screen of Death Errors

In the majority of cases, you will encounter mpdev.sys BSOD errors after you've installed new hardware, software (Acronis Disk Director Home), or performed a failed Windows Update. In other cases, software corruption caused by a malware infection can lead to mpdev.sys Blue Screen of Death errors. Therefore, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.


GEEK TIP : As a rule of thumb, it's always a good idea to create a Windows "Snapshot" backup / System Restore Point before making any hardware or software changes to your computer. That way, it's very easy to restore your system in the unfortunate event you encounter a mpdev.sys Blue Screen of Death error after recent changes.



How to Fix mpdev.sys Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your mpdev.sys issue. These troubleshooting steps are listed in the recommended order of execution.


Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. When you see the search box, type "System Restore" and press "ENTER".
  3. In the search results, find and click System Restore.
  4. Please enter the administrator password (if applicable / prompted).
  5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
  6. Restore your computer to that backup image.

If the Step 1 fails to resolve the mpdev.sys error, please proceed to the Step 2 below.

Step 2: If recently installed Acronis Disk Director Home (or related software), uninstall then try reinstalling Acronis Disk Director Home software.

You can uninstall Acronis Disk Director Home software by following these instructions (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. In the search box, type "Uninstall" and press "ENTER".
  3. In the search results, find and click "Add or Remove Programs"
  4. Find the entry for Acronis Disk Director Home 11 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Acronis Disk Director Home software.

If this Step 2 fails as well, please proceed to the Step 3 below.

Acronis Disk Director Home 11

Acronis

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many mpdev.sys error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

  1. Hit the Windows Start button
  2. In the search box, type "Update" and press "ENTER".
  3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
  4. If updates are available for download, click "Install Updates".
  5. After the update is completed, restart your PC.

If Windows Update failed to resolve the mpdev.sys error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.



If Those Steps Fail: Download and Replace Your mpdev.sys File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate mpdev.sys file version. We maintain a comprehensive database of 100% malware-free mpdev.sys files for every applicable version of Acronis Disk Director Home. Please follow the steps below to download and properly replace you file:

  1. Locate your Windows operating system version in the list of below "Download mpdev.sys Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate Acronis Disk Director Home folder location:
    Windows 10: C:\Program Files (x86)\Common Files\Acronis\DiskDirector\WinPE\Files\IScsi\
  4. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.


GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve mpdev.sys problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.



Download mpdev.sys Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying mpdev.sys to your appropriate Windows system directory. Acronis typically does not release Acronis Disk Director Home SYS files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing mpdev.sys and all other SYS files for Acronis Disk Director Home. An incorrectly installed SYS file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10


Files Related to mpdev.sys


SYS Files Related to mpdev.sys

File Name Description Software Program (Version) File Size (bytes) File Location
mpio.sys MultiPath Support Bus-Driver Microsoft® Windows® Operating System (1.22.3790.2358) 93240 C:\Windows\Fonts\
msiscdsm.sys Microsoft iSCSI Device Specific Module for Multipath Microsoft® Windows® Operating System (5.2.3790.3825) 32824 C:\Windows\SystemApps\ContactSupport_cw5n1h2txy...
mpdev.sys Multipath Scsi Device Filter Microsoft® Windows® Operating System (1.22.3790.2358) 14904 C:\Windows\SystemApps\ContactSupport_cw5n1h2txy...
ramdrv.sys Windows System Configuration Acronis Disk Director Home 11 13856 C:\Windows\SystemApps\Microsoft.Windows.SecureA...
snapman.sys Acronis Snapshot API Acronis Snapshot API (3.9 build 534) 276576 C:\Windows\Temp\527D94AF-D053-4381-B105-0D815D5...

Other Files Related to mpdev.sys

File Name Description Software Program (Version) File Size (bytes) File Location
setupapi.dev.log Log Acronis Disk Director Home 11 684126 C:\Windows\inf\
WmiApRpl.ini Windows Initialization Acronis Disk Director Home 11 29736 C:\Windows\inf\WmiApRpl\0009\
api-ms-win-core-sysinf... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 12136 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
api-ms-win-core-dateti... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 11112 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
snapshot.etl Microsoft Event Trace Log Acronis Disk Director Home 11 393216 C:\Windows\System32\WDI\{86432a0b-3c7d-4ddf-a89...


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