Most antivirus programs identify mngr.dll as malware—for example TrendMicro identifies it as ADW_BPROTECT or ADW_BROMNGR, and Symantec identifies it as Adware.GoonSquad.
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Description: Mngr.dll is not essential for Windows and will often cause problems. The file mngr.dll is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of the user's profile folder.
Known file sizes on Windows 10/8/7/XP are 2,148,376 bytes (39% of all occurrences), 2,147,352 bytes and 5 more variants.
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. Mngr.dll is certified by a trustworthy company. It is not a Windows core file. It can change the behavior of other programs or manipulate other programs. The program is not visible. The service has no detailed description. The application starts upon Windows startup (see Registry key: AppInit_DLLs). Mngr.dll is able to record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 73% dangerous.
Recommended: Identify mngr.dll related errors
Important: You should check the mngr.dll process on your PC to see if it is a threat. If Protector has changed your browser's search engine and start page, you can recover your browser's default settings as follows:Reset default browser settings for Internet-Explorer ▾
The following programs have also been shown useful for a deeper analysis: ASecurity Task Manager examines the active mngr process on your computer and clearly tells you what it is doing. Malwarebytes' well-known Banti-malware tool tells you if the mngr.dll on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.
A clean and tidy computer is the key requirement for avoiding PC trouble. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.