Microsoft Windows SYS acpiex.sys

How to Download and Fix Acpiex.sys Errors

Last Updated: 11/29/2024
[Reading Time Required: 3.5 minutes]

acpiex.sys, also known as a ACPIEx Driver file, was created by Microsoft for the development of Microsoft® Windows® Operating System. SYS files fall under under the Win32 EXE (Dynamic link library) file type category.

The first release of acpiex.sys for the Windows 8 platform was on 08/01/2012 for Windows 8. The latest version update [v10.0.15063.0 (WinBuild.160101.0800)] for Windows was 10 released on 07/29/2015. acpiex.sys is bundled with the software package in Windows 10, Windows 8.1, and Windows 8.

Below, you find comprehensive file information, instructions for simple SYS file troubleshooting, and list of free acpiex.sys downloads for each available file version.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	acpiex.sys
File Extension:	SYS file extension
Description:	ACPIEx Driver
Object File Type:	Dynamic link library
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:	(none)
File Flags Mask:	0x003f
Entry Point:	0x1480
Code Size:	72192

View Other acpiex.sys Information

File Info	Description
File Size:	88 kB
File Modification Date/Time:	2017:03:18 18:18:24+00:00
File Inode Change Date/Time:	2017:11:05 07:07:54+00:00
File Type:	Win32 EXE
MIME Type:	application/octet-stream
Warning:	Possibly corrupt Version resource
Machine Type:	Intel 386 or later, and compatibles
Time Stamp:	2008:01:23 19:20:28+00:00
PE Type:	PE32
Linker Version:	14.10
Code Size:	72192
Initialized Data Size:	9728
Uninitialized Data Size:	0
Entry Point:	0x1480
OS Version:	10.0
Image Version:	10.0
Subsystem Version:	10.0
Subsystem:	Native
File Version Number:	10.0.15063.0
Product Version Number:	10.0.15063.0
File Flags Mask:	0x003f
File Flags:	(none)
File OS:	Windows NT 32-bit
Object File Type:	Dynamic link library
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Unicode
Company Name:	Microsoft Corporation
File Description:	ACPIEx Driver
File Version:	10.0.15063.0 (WinBuild.160101.0800)
Internal Name:	acpiex.sys
Legal Copyright:	© Microsoft Corporation. All rights reserved.
Original Filename:	acpiex.sys
Product Name:	Microsoft® Windows® Operating System
Product Version:	10.0.15063.0

^✻ Portions of file data provided by Exiftool (Phil Harvey) distributed under the Perl Artistic License.

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What are acpiex.sys Error Messages?

acpiex.sys Blue Screen of Death (BSOD) Errors

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

acpiex.sys could not be found.
acpiex.sys failed to load.
The file acpiex.sys is missing or corrupt.
Windows failed to start - acpiex.sys.

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: acpiex.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] (acpiex.sys).

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

It's Critical to Resolve Blue Screen of Death Errors

In the majority of cases, you will encounter acpiex.sys BSOD errors after you've installed new hardware, software (Windows), or performed a failed Windows Update. In other cases, software corruption caused by a malware infection can lead to acpiex.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 acpiex.sys Blue Screen of Death error after recent changes.

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How to Fix acpiex.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 acpiex.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):

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

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

Step 2: Run SFC (System File Checker) to restore the corrupt or missing acpiex.sys file.

System File Checker is a utility included with every Windows version that allows you scan and restore corrupted system files. Use the SFC tool to fix missing or corrupt acpiex.sys files (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
In the search box, type "cmd" but DO NOT PRESS "ENTER".
Press and hold "CTRL-Shift" on your keyboard while pressing "ENTER".
You'll be prompted with a permission dialog box.
In the box, click "YES".
You should have a black screen with a blinking cursor.
In that black screen, type "sfc /scannow" and hit "ENTER".
SFC will begin scanning for acpiex.sys issues and any other system file problems.
Follow any on-screen commands to complete the process.

Please be aware that this scan might take a while, so please be patient while it is working.

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

sfc /scannow

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 acpiex.sys error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

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

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

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If Those Steps Fail: Download and Replace Your acpiex.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 acpiex.sys file version. We maintain a comprehensive database of 100% malware-free acpiex.sys files for every applicable version of Windows. Please follow the steps below to download and properly replace you file:

Locate your Windows operating system version in the list of below "Download acpiex.sys Files".
Click the appropriate "Download Now" button and download your Windows file version.
Copy the file into the appropriate directory for your Windows version:

Windows 8: C:\Windows\System32\drivers\
Windows 8.1: C:\Windows\System32\drivers\
Windows 10: C:\Windows\System32\drivers\

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 acpiex.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.

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

CAUTION : We strongly advise against downloading and copying acpiex.sys to your appropriate Windows system directory. Microsoft typically does not release Windows 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 acpiex.sys and all other SYS files for Windows. 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

File Name

Software Version

File Version

Architecture

acpiex.sys

10.0.15063.0

10.0.15063.0 (WinBuild.160101.0800)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Microsoft® Windows® Operating System
Software Version:	10.0.15063.0
File Version:	10.0.15063.0 (WinBuild.160101.0800)
File Size:	90528
File Date:	03/18/2017
MD5 Checksum:	fa42ec38e98993b4807f26ebb1c6c5ac
SHA1 Checksum:	a0a69cfa3691cfcb30a0d1f3dd78b98a3366619b
SHA256 Checksum:	3e0cbce5eb5f7db660dceff1b472678c999385bf0e1d792aa96b01261f0ccd12
CRC32:
File Directory Location:	C:\Windows\System32\drivers\

File Version, System, and Machine Information
File Type:	Win32 EXE
Image Version:	10.0
Initialized Data Size:	9728
Linker Version:	14.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Native
Subsystem Version:	10.0
File Modification Date/Time:	03/18/2017

Windows 8.1

File Name

Software Version

File Version

Architecture

acpiex.sys

6.3.9600.16384

6.3.9600.16384 (winblue_rtm.130821-1623)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8.1
Software:	Microsoft® Windows® Operating System
Software Version:	6.3.9600.16384
File Version:	6.3.9600.16384 (winblue_rtm.130821-1623)
File Size:	61280
File Date:	08/22/2013
MD5 Checksum:	dca3c5f55150b3aeb8b75a5e8d1156dc
SHA1 Checksum:	620037652edb67a38dc91d2fc7af4c3d85f80b18
SHA256 Checksum:	5becba14872511e9195b66f5ba290c80978c0dffb08fabb8c5502d6f4b2927b9
CRC32:
File Directory Location:	C:\Windows\System32\drivers\

File Version, System, and Machine Information
File Type:	Win32 EXE
Image Version:	6.3
Initialized Data Size:	9216
Linker Version:	11.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Native
Subsystem Version:	6.3
File Modification Date/Time:	08/22/2013

Windows 8

File Name

Software Version

File Version

Architecture

acpiex.sys

6.2.9200.16384

6.2.9200.16384 (win8_rtm.120725-1247)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8
Software:	Microsoft® Windows® Operating System
Software Version:	6.2.9200.16384
File Version:	6.2.9200.16384 (win8_rtm.120725-1247)
File Size:	58608
File Date:	07/26/2012
MD5 Checksum:	3a5da97644b9e2662cff186a8798519c
SHA1 Checksum:	c74fddb566adfe0f825165ceabb0d68d99960b1a
SHA256 Checksum:	8af47b3c6c2cdacd1323e97b9c02fddfa2caf68d660b4e8713b160d3c81491ed
CRC32:
File Directory Location:	C:\Windows\System32\drivers\

File Version, System, and Machine Information
File Type:	Win32 EXE
Image Version:	6.2
Initialized Data Size:	8704
Linker Version:	10.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Native
Subsystem Version:	6.2
File Modification Date/Time:	07/26/2012

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Files Related to acpiex.sys

SYS Files Related to acpiex.sys

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
IPMIDrv.sys	Windows System Configuration	Windows Vista	77824	C:\Windows\Logs\DPX\
asyncmac.sys	MS Remote Access serial network driver	Microsoft® Windows® Operating System (6.1.7600.16385)	23040	C:\Windows\System32\Sysprep\Panther\
tcpipreg.sys	TCP/IP Registry Compatibility Driver	Microsoft® Windows® Operating System (6.1.7601.17514)	45056	C:\Windows\System32\Sysprep\Panther\
usbscan.sys	USB Scanner Driver	Microsoft® Windows® Operating System (10.0.15063.0)	38400	C:\Windows\Panther\NewOs\Panther\
pnpmem.sys	Plug and Play Memory Driver	Microsoft® Windows® Operating System (6.3.9600.16384)	13312	C:\Windows\Fonts\

Other Files Related to acpiex.sys

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
OneX_v1.xsd	XML Schema Definition	Windows 8	5957	C:\Windows\L2Schemas\
WWAN_profile_v1.xsd	XML Schema Definition	Windows 7	6201	C:\Windows\L2Schemas\
WWAN_profile_v1.xsd	XML Schema Definition	Windows 8	6201	C:\Windows\L2Schemas\
WWAN_profile_v1.xsd	XML Schema Definition	Windows 10	6201	C:\Windows\L2Schemas\
WLANAP_profile_v1.xsd	XML Schema Definition	Windows 8.1	7548	C:\Windows\L2Schemas\

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