The genuine btmmhook.dll file is a software component of Bluetooth Software by Broadcom. A software hook for Bluetooth multimedia devices, this Broadcom application runs in the background when a Bluetooth device is connected to your PC. A software hook is a method in which certain functions or procedures are modified or redirected for use with outside software. This hook allows your Bluetooth device to perform its primary function through your OS. Located in Irvine, California, Broadcom is a Fortune 500 semiconductor company that has a strong focus on network hardware.
BtMmHook stands for Bluetooth Multimedia Keys Hook
Btmmhook.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 btmmhook.dll is a Windows system file or if it belongs to an application that you can trust.
The process known as Multimedia Keys Hook DLL or WIDCOMM Bluetooth Software (version 126.96.36.1990, 188.8.131.523)
belongs to software WIDCOMM Bluetooth Software or Bluetooth Software or Broadcom (version 2070 Bluetooth) or HP Integrated Module with Bluetooth wireless or HP Integrated Module with or Broadcom Bluetooth Software or Lenovo Bluetooth with or Lenovo Bluetooth with Enhanced Data Rate
by Broadcom (www.broadcom.com).
Description: Btmmhook.dll is not essential for the Windows OS and causes relatively few problems. Btmmhook.dll is located in the C:\Windows\System32 folder or sometimes in a subfolder of C:\Windows.
Known file sizes on Windows 8/7/XP are 208,896 bytes (92% of all occurrences), 212,992 bytes, 221,184 bytes, 77,824 bytes or 73,728 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. The program is not visible. There is no detailed description of this service. It can change the behavior of other programs or manipulate other programs. Btmmhook.dll is not a Windows core file. The software can be uninstalled in the Control Panel. Btmmhook.dll is able to record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 56% dangerous, however you should also read the user reviews.
If you still experience problems with btmmhook.dll, you may want to go to the support area  of the Dell website or remove the entire program WIDCOMM Bluetooth Software or HP Integrated Module with using Windows Control Panel.
Recommended: Identify btmmhook.dll related errors
Important: Some malware disguises itself as btmmhook.dll, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the btmmhook.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.
A clean and tidy computer is the key requirement for avoiding problems with btmmhook. 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 doing a repair of your installation, or in the case of Windows 8, 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 btmmhook.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.