Fix PEAuth.sys Errors

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

PEAuth.sys file Protected Environment Authentication and Authorization Export Driver. 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 PEAuth.sys related errors on your device. You can also download PEAuth.sys file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, 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

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 PEAuth.sys

4.1 List of PEAuth.sys file versions

File info

General information
Filename	PEAuth.sys
File extension	SYS
Description	Protected Environment Authentication and Authorization Export Driver

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 PEAuth.sys file related problems

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

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

PEAuth.sys

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

Problems related to PEAuth.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 PEAuth.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 PEAuth.sys errors in just few steps?

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

PEAuth.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 PEAuth.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 PEAuth.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 PEAuth.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 PEAuth.sys file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the PEAuth.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 PEAuth.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 PEAuth.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 PEAuth.sys file

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

Go to the folder where the file should be located and paste the downloaded file. Below is the list of PEAuth.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: C:\Windows\System32\drivers\
Windows Vista: C:\Windows\System32\drivers\

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

System Windows 10

File size 677888 bytes

Date 2017-03-18

Download

File details
	MD5	904850d34d110d1b20b5c8313e92ad2a
	SHA1	eecc00a07ceb86c1474380b386a1a70a3799d41e
	SHA256	338cd2b24f8933b6028e4175b4e83421d096c4bfe47be50d2cbf24abe8202888
	CRC32	34fc00b6
	Example file location	C:\Windows\System32\drivers\

Filename PEAuth.sys

System Windows 8.1

File size 640000 bytes

Date 2014-11-21

Download

File details
	MD5	1a9dfe5854bd66e28178431e9c96e77d
	SHA1	accc2256928f7ab3da23462528d7d53bb318f772
	SHA256	8731cab4c426fc641864a868aadc33eaed00e08a2e2f9b9f31484ee3852c1d6d
	CRC32	ee98339e
	Example file location	C:\Windows\System32\drivers\

Filename PEAuth.sys

System Windows 8

File size 709632 bytes

Date 2012-07-26

Download

File details
	MD5	50f9cc87d2f7da89356c99b9f73580d6
	SHA1	e0fefe80c6a62181c175e5513b15591e555016a6
	SHA256	4c65d71f899b0c2a75811f5c62f7f0a63008ea019cdb84aa540355ac472f7ae9
	CRC32	75c27042
	Example file location	1: C:\Windows\System32\drivers\

Filename PEAuth.sys

System Windows 7

File size 651264 bytes

Date 2009-07-14

Download

File details
	MD5	68769c3356b3be5d1c732c97b9a80d6e
	SHA1	83d44757793ab061fe5cd6e8f281ba756fd128b0
	SHA256	fb2d61145980a2899d1b7729184c54070315b0e63c9a22400a76ccd39e00029c
	CRC32	4cb5d03e
	Example file location	C:\Windows\System32\drivers\

Filename PEAuth.sys

System Windows Vista

File size 712704 bytes

Date 2006-10-24

Download

File details
	MD5	58865916f53592a61549b04941bfd80d
	SHA1	80b40b4b67977aee04c2cf1a2d8cf2f0b1384881
	SHA256	3511af2efd06636e144c36eca8c7aa1a33c269edb10a6d879aa25d9e11359aa9
	CRC32	bf8a35bf
	Example file location	C:\Windows\System32\drivers\