What is qmgr.dll?

The genuine qmgr.dll file is a software component of Background Intelligent Transfer Service (BITS) by Microsoft.
A supporting DLL for the Background Intelligent Transfer Service, this file assists with the utilization of unused network bandwidth to transfer information. It is used primarily for update services, and operates in such a way that it does not hamper priority downloads or transfers. Founded in 1975, Microsoft's flagship product is the Windows operating system, which is installed on over 90% of workstations worldwide.

QMgr stands for Q Manager

Qmgr.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 qmgr.dll is a Windows system file or if it belongs to an application that you can trust.

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Qmgr.dll file information

The process known as Background Intelligent Transfer Service belongs to software Background Intelligent Transfer Service (BITS) or Microsoft Windows Operating System or Service de transfert intelligent en arrière-plan (BITS) by Microsoft (

Description: Qmgr.dll is not essential for the Windows OS and causes relatively few problems. Qmgr.dll is located in the C:\Windows\System32 folder or sometimes in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 409,088 bytes (53% of all occurrences), 382,464 bytes, 408,576 bytes, 585,728 bytes or 758,272 bytes. 
The service can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. Qmgr.dll is not a Windows system file. Qmgr.dll is a trustworthy file from Microsoft. Therefore the technical security rating is 2% dangerous.

Recommended: Identify qmgr.dll related errors

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

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

qmgr.dll [all]