What is bcmwl5?

Bcmwl5.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if bcmwl5.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for bcmwl5 drivers in need of updating

Bcmwl5.sys file information

The process known as Broadcom (version 802.11 Network Adapter wireless driver) or Broadcom Corporation NDIS (version 5.0 wireless driver) belongs to software Dell Wireless WLAN Card Driver or Broadcom (version 802.11 Network Adapter Driver) or Pilote pour carte réseau Broadcom by Broadcom (

Description: Bcmwl5.sys is not essential for the Windows OS and causes relatively few problems. Bcmwl5.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 424,320 bytes (37% of all occurrences), 429,184 bytes, 265,728 bytes, 424,448 bytes or 822,272 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program has no visible window. There is no detailed description of this service. The file is not a Windows system file. The file is a trustworthy file from Microsoft. bcmwl5.sys appears to be a compressed file. Therefore the technical security rating is 15% dangerous; however you should also read the user reviews.

Recommended: Identify bcmwl5.sys related errors

Important: Some malware disguises itself as bcmwl5.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the bcmwl5.sys process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Supplied to me by BT with BT Voyager wireless hardware, not had any problems
wifi driver
Broadcom BCM43xx chipset wi-fi driver. It includes firmware that is loaded on to the wi-fi adapter when Windows starts up.
  Pete Boyd  
It is a driver for my Dell Wirless 1490 Dual Band WLAN mini card
Buffalow AirStation WLI-CB-G54HP Adapter
  urmo-andres   (further information)
Is a driver and module
Broadcom wireless driver, BSOD
driver for Broadcom 802.11g PCI wifi adapter
  Luciano   (further information)
it's not a necessary driver. i suggest deleting it, and all traces of it, from your computer. just use the program that came with your wireless card, or find out what kind of wireless card you have installed in your laptop, and look online for the approriate wireless configuration program.
It is the driver for your Broadcom 802.11 wireless radio
Wireless Driver
  Michael M.  

Rating chart

Summary: Average user rating of bcmwl5.sys: based on 15 votes with 11 user comments. 11 users think bcmwl5.sys is essential for Windows or an installed application. One user thinks it's probably harmless. 3 users think it's neither essential nor dangerous. 2 users don't grade bcmwl5.sys ("not sure about it").

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Best practices for resolving bcmwl5 issues

A clean and tidy computer is the key requirement for avoiding problems with bcmwl5. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the bcmwl5.sys process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

bcmwl5.sys [all]