What is BfLLR.dll?

BfLLR.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if BfLLR.dll is a Windows system file or if it belongs to an application that you can trust.

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BfLLR.dll file information

The process known as BFLLR Dynamic Library belongs to software ™ Killer PCI-E or Qualcomm Atheros Killer Network Manager by Bigfoot Networks.

Description: BfLLR.dll is not essential for the Windows OS and causes relatively few problems. The BfLLR.dll file is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 196,096 bytes (82% of all occurrences), 174,592 bytes or 183,808 bytes. 
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. It can change the behavior of other programs or manipulate other programs. The program is not visible. The service has no detailed description. BfLLR.dll is not a Windows core file. The software can be removed using the Control Panel's Add\Remove programs applet. BfLLR.dll is able to monitor applications. Therefore the technical security rating is 56% dangerous.

Uninstalling this variant: In case you experience problems using BfLLR.dll, you may want to uninstall Qualcomm Atheros Killer Network Manager software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 10/8/7), go to the support area of the KillerGaming website or check the vendor’s website for a newer version.

Recommended: Identify BfLLR.dll related errors

Important: Some malware disguises itself as BfLLR.dll, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the BfLLR.dll 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.


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Best practices for resolving BfLLR issues

A clean and tidy computer is the key requirement for avoiding problems with BfLLR. 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 BfLLR.dll 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

BfLLR.dll [all]