portcls.sys - Repair Issues and Download

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

portcls.sys file Port Class (Class Driver for Port/Miniport Devices). 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 portcls.sys related errors on your device. You can also download portcls.sys file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows Vista, Windows Vista, Windows XP 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, Windows Vista, Windows XP

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 portcls.sys

4.1 List of portcls.sys file versions

File info

General information
Filename	portcls.sys
File extension	SYS
Description	Port Class (Class Driver for Port/Miniport Devices)

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 portcls.sys file related problems

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

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

portcls.sys

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

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

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

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

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

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

Windows 10: C:\Windows\System32\DriverStore\FileRepository\wdmaudio.inf_x86_01f7d3c9455ec3d6\
Windows 8.1: C:\Windows\System32\DriverStore\FileRepository\wdmaudio.inf_x86_fb00e365dc41a1f7\
Windows 8: 1: C:\Windows\System32\DriverStore\FileRepository\wdmaudio.inf_x86_fb00e365dc41a1f7\
Windows 7: ---
Windows Vista: ---
Windows Vista: ---
Windows Vista: ---
Windows XP: ---

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

System Windows 10

File size 264704 bytes

Date 2017-03-18

Download

File details
	MD5	45705b40c02794b6e00b56da76f7636e
	SHA1	1460d0794fba544d6abdb6796ae0608c28399209
	SHA256	3afc838c31e1cf170f1abb384bd6ebc5372dc2943a1d2baa1da4aa4aefeb2a27
	CRC32	fe5d2089
	Example file location	C:\Windows\System32\DriverStore\FileRepository\wdmaudio.inf_x86_01f7d3c9455ec3d6\

Filename portcls.sys

System Windows 8.1

File size 203776 bytes

Date 2014-11-21

Download

File details
	MD5	fb7abf9730de838739f4c43091dfef03
	SHA1	bbe78c376ba088342fb46ac395af29bd1d553b0c
	SHA256	30fbd87aaea373171d96fae1a6e5df3220b4f06457075b81b1f4cc93476cc32f
	CRC32	869258fe
	Example file location	C:\Windows\System32\DriverStore\FileRepository\wdmaudio.inf_x86_fb00e365dc41a1f7\

Filename portcls.sys

System Windows 8

File size 218624 bytes

Date 2012-07-26

Download

File details
	MD5	a5d443c2f2502a01afd06ccc5edf1fc7
	SHA1	94a6ae84a4f33c4ed131585a3c06636e08e85d89
	SHA256	74d05ec64fd319922d4dc1dd14438d624d3b7ff2cd70918ee5fd49c48d5fb5f6
	CRC32	ae2f835c
	Example file location	1: C:\Windows\System32\DriverStore\FileRepository\wdmaudio.inf_x86_fb00e365dc41a1f7\

Filename portcls.sys

System Windows 7

File size 230400 bytes

Date 2009-07-14

Download

File details
	MD5	32e11315b5126921ffd9074840ef13d3
	SHA1	1d43c671b18878d11ccdfaa0e5a7ebbea33d2499
	SHA256	fc7c0e1cc447fdd89c0fa5ebfd04cceabfb27751ab57a7176f12bd0d35306e1c
	CRC32	41756a2d
	Example file location	---

Filename portcls.sys

System Windows Vista

File size 218112 bytes

Date -0001-11-30

Download

File details
	MD5	7b7820082cacf593d6ff343d082a3aa3
	SHA1	ae6f0365f87b8b03b96d4f173d0fe02f6aa8ece9
	SHA256	fc2de6ad2f112c7ec94ad08bfaa90495d70f6555a51f49fce39caf7fbd0e09cf
	CRC32	29b35c70
	Example file location	---

Filename portcls.sys

System Windows Vista

File size 217600 bytes

Date 2008-01-21

Download

File details
	MD5	9741e1dba530cce23f79a5fc3e8ec001
	SHA1	c2b752259937a6c9950888057b0b545d7e13e12d
	SHA256	8faceaaca63cb246e701087c6d09a6bf6f279676582575b70066183478581375
	CRC32	2f5261bf
	Example file location	---

Filename portcls.sys

System Windows Vista

File size 221696 bytes

Date -0001-11-30

Download

File details
	MD5	9a396ef19388190c2ff90db7c3adedfb
	SHA1	c9637fc104650d60df8932be8955df590595bcc3
	SHA256	c8ddac464cc73e9f76456fadc78cd0a26aba5cddb2b63c438f3dee8475c2e414
	CRC32	8acfeb2d
	Example file location	---

Filename portcls.sys

System Windows XP

File size 146048 bytes

Date 2008-04-14

Download

File details
	MD5	e82a496c3961efc6828b508c310ce98f
	SHA1	6fc12ae869c7f3511726e1b2bb4b351f4632718a
	SHA256	e142a0809525b34a376b3063b07b8822930056bbcb886b7cf1d7585bcec371a0
	CRC32	a9aa6068
	Example file location	---