Quantcast

Repair and Download ql40xx.sys Now

Sometimes Windows system displays error messages regarding corrupted or missing ql40xx.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 ql40xx.sys file can therefore effect in failed execution of the started process.

ql40xx.sys file QLogic iSCSI Storport Miniport 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 ql40xx.sys related errors on your device. You can also download ql40xx.sys file compatible with Windows 7, Windows Vista devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 7, Windows Vista
User popularity

Fix ql40xx.sys errors

File info

General information
Filename ql40xx.sys
File extension SYS
Description QLogic iSCSI Storport Miniport Driver
Software
Program QLA40XX iSCSI Host Bus Adapter
Author QLogic Corporation
Details
MIME type application/octet-stream
File type Driver
System Win32
Copyrights © QLogic Corporation. All rights reserved.
Character set Windows, Latin1
Language cod English (U.S.)
ql40xx.sys

There are various types of errors related to ql40xx.sys file. ql40xx.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 ql40xx.sys file. If you encounter one listed below (or similar), please consider the following suggestions.

  • ql40xx.sys is corrupted
  • ql40xx.sys cannot be located
  • Runtime Error - ql40xx.sys
  • ql40xx.sys file error
  • ql40xx.sys file cannot be loaded. Module was not found
  • cannot register ql40xx.sys file:
  • ql40xx.sys file could not be loaded
  • ql40xx.sys file doesn't exist

ql40xx.sys

Error

Application could not be started because ql40xx.sys file is missing. Reinstall the application to solve the problem.

OK

Problems related to ql40xx.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 ql40xx.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.

ql40xx.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

Virus Scan

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with ql40xx.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.

Windows Update

Installing relevant Microsoft Windows patches and updates may solve your problems related to ql40xx.sys file. Use dedicated Windows tool to perform the update.

  1. Go to the Windows "Start" menu
  2. Type "Windows Update" in the search field
  3. Choose the appropriate software program (name may vary depending on your system version)
  4. Check if your system is up to date. If any unapplied updates are listed, install them immediately.
  5. 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 ql40xx.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

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 ql40xx.sys file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the ql40xx.sys file with properly working version. To use the tool:

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

Step 4: Restoring Windows system

Windows Recovery

Another approach is to restore system to previous state, before the ql40xx.sys file error occured. In order to restore your system, follow the instructions below

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

If all the above-mentioned methods failed and the ql40xx.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 ql40xx.sys file

The last solution is to manually download and replace ql40xx.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 ql40xx.sys file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of ql40xx.sys file example directory paths.

  • Windows 7: C:\Windows\System32\DriverStore\FileRepository\ql40xx.inf_amd64_neutral_77a826e5c0a07842\
  • Windows Vista: C:\Windows\System32\drivers\

If the steps did not solve your ql40xx.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 ql40xx.sys
System Windows 7
File size 128592 bytes
Date 2009-07-14
Download
File details
MD5 4f6d12b51de1aaeff7dc58c4d75423c8
SHA1 29529fc3edf901145d905f6f1575551b54f37dbf
SHA256 fb6abab741ced66a79e31a45111649f2fa3e26cee77209b5296f789f6f7d08de
CRC32 753f8a79
Example file location C:\Windows\System32\DriverStore\FileRepository\ql40xx.inf_amd64_neutral_77a826e5c0a07842\
Filename ql40xx.sys
System Windows Vista
File size 124008 bytes
Date 2006-11-02
Download
File details
MD5 e1c80f8d4d1e39ef9595809c1369bf2a
SHA1 b856db80e30a56bd750467afd3a1b53f431daee3
SHA256 5c18f8366049c690fc8aa4a992aa0765a6607f72e0ef889a5f3757e59fb1c143
CRC32 4371086f
Example file location C:\Windows\System32\drivers\