What is AppMgr32.dll?

AppMgr32.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 AppMgr32.dll is a Windows system file or if it belongs to an application that you can trust.

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AppMgr32.dll file information

The process known as Symantec Application Core Manager belongs to software Symantec Application Core by Symantec (

Description: AppMgr32.dll is not essential for the Windows OS and causes relatively few problems. The file AppMgr32.dll is located in a subfolder of "C:\Program Files\Common Files". Known file sizes on Windows 10/8/7/XP are 279,384 bytes (66% of all occurrences) or 278,360 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 has no visible window. The file is a Verisign signed file. The file has a digital signature. There is no detailed description of this service. It is not a Windows core file. Therefore the technical security rating is 42% dangerous.

Uninstalling this variant: There is a possibility to completely remove AppCore (Control Panel ⇒ Uninstall a Program).

Recommended: Identify AppMgr32.dll related errors

If AppMgr32.dll is located in the C:\Windows\System32 folder, the security rating is 92% dangerous. The file size is 21,386 bytes (50% of all occurrences) or 40,388 bytes. The application has no file description. AppMgr32.dll is located in the Windows folder, but it is not a Windows core file. The program has no visible window. The AppMgr32.dll file is able to change the behavior of, or monitor Internet Explorer. The service has no detailed description. AppMgr32.dll is not a Windows system file.

Important: Some malware camouflages itself as AppMgr32.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the AppMgr32.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 AppMgr32 issues

A clean and tidy computer is the key requirement for avoiding problems with AppMgr32. 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 AppMgr32.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

AppMgr32.dll [all]