How to remove the app_dll virus

Most antivirus programs identify app_dll.dll as malware—for instance Symantec identifies it as W32.Unruy.A or Reser.Reputation.1, and Kaspersky identifies it as Trojan.Win32.FraudPack.apul or

The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.

Click to Run a Free Virus Scan for the app_dll.dll malware

App_dll.dll file information

There are no author's data about the app_dll.dll process.

Description: App_dll.dll is not essential for Windows and will often cause problems. App_dll.dll is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 69,120 bytes (31% of all occurrences), 90,624 bytes, 93,696 bytes, 94,208 bytes or 59,904 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. There is no file information. App_dll.dll is not a Windows core file. The program is not visible. The service has no detailed description. It can change the behavior of other programs or manipulate other programs. The process is loaded during the Windows boot process (see Registry key: AppInit_DLLs). app_dll.dll appears to be a compressed file. Therefore the technical security rating is 84% dangerous.

Recommended: Identify app_dll.dll related errors

Important: You should check the app_dll.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 app_dll issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active app_dll process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the app_dll.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 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.

Other processes

app_dll.dll [all]