Fix wmiacpi.sys Errors

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

wmiacpi.sys file Windows Management Interface for ACPI. 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 wmiacpi.sys related errors on your device. You can also download wmiacpi.sys file compatible with Windows 10, Windows 8.1, Windows 8, 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 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 wmiacpi.sys

4.1 List of wmiacpi.sys file versions

File info

General information
Filename	wmiacpi.sys
File extension	SYS
Description	Windows Management Interface for ACPI

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.)

Most common wmiacpi.sys file related problems

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

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

wmiacpi.sys

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

Problems related to wmiacpi.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 wmiacpi.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.

How to fix wmiacpi.sys errors in just few steps?

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

wmiacpi.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

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

Installing relevant Microsoft Windows patches and updates may solve your problems related to wmiacpi.sys 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 wmiacpi.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 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 wmiacpi.sys file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the wmiacpi.sys 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 wmiacpi.sys 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 wmiacpi.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 wmiacpi.sys file

The last solution is to manually download and replace wmiacpi.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 wmiacpi.sys file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of wmiacpi.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: ---
Windows Vista: ---
Windows Vista: ---

If the steps did not solve your wmiacpi.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 wmiacpi.sys

System Windows 10

File size 12288 bytes

Date 2017-03-18

Download

File details
	MD5	5e83db26ce603b8691ba0214c498e651
	SHA1	6e0b67f32270dae31ac0c877ba8765923b861389
	SHA256	17f8b72120d67363b112107cf48b2bb8af493b74405578f2f7cf3a6fb443a418
	CRC32	816bf7bb
	Example file location	C:\Windows\System32\drivers\

Filename wmiacpi.sys

System Windows 8.1

File size 12288 bytes

Date 2013-08-22

Download

File details
	MD5	af01c55490366930dfaf1d3655c763bd
	SHA1	53b17fc50cca7fdd161147d9a68b9457f504e783
	SHA256	59081ac6b83e0a4a376a62417458c520aba7db4fb1aeeec4c45fc8c0af61fc20
	CRC32	8a3bb1a6
	Example file location	C:\Windows\System32\drivers\

Filename wmiacpi.sys

System Windows 8

File size 11264 bytes

Date 2012-07-26

Download

File details
	MD5	f8a31500a1b7efdb95e5103a7c7275c1
	SHA1	ff0c09aa62d391db0360e09e3b9d294747415f02
	SHA256	5d265ccd4f30603fbcf53ba60bcff2a8b0801215b63fa6837ae6d401bfd1d416
	CRC32	6cf2d574
	Example file location	1: C:\Windows\System32\drivers\

Filename wmiacpi.sys

System Windows 7

File size 14336 bytes

Date 2009-07-13

Download

File details
	MD5	f6ff8944478594d0e414d3f048f0d778
	SHA1	f8ed5ed6eb6d505d536df6d2ad0d738794939726
	SHA256	6f75e0ae6127b33a92a88e59d4b048fd4c15f997807be7bf0efe76f95235b1d9
	CRC32	0fc8f7a7
	Example file location	---

Filename wmiacpi.sys

System Windows Vista

File size 14336 bytes

Date -0001-11-30

Download

File details
	MD5	ae34218455d5dc12d1e45de85f160346
	SHA1	8241ee37b00a1efe5ecf57cfe24f19082d59fe5c
	SHA256	7072829c5956f8b5740690ed0e4107dd945a34f4a08709c6562f1ce6146b8977
	CRC32	efb68516
	Example file location	---

Filename wmiacpi.sys

System Windows Vista

File size 14336 bytes

Date 2008-01-21

Download

File details
	MD5	e18aebaaa5a773fe11aa2c70f65320f5
	SHA1	8eb0857d09b6058e8013a6a82c33fe6241a7a3b1
	SHA256	9e2f6fc0f46d0eeebf4bc1e3d8800b3d268079abf8eddd70cd21b789883d7390
	CRC32	36b96c00
	Example file location	---