What is guard32.dll?

Guard32.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 guard32.dll is a Windows system file or if it belongs to an application that you can trust.

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Guard32.dll file information

The process known as COMODO Internet Security or COMODO Firewall Pro

belongs to software COMODO Internet Security or Comodo Security Solutions or COMODO Firewall Pro or COMODO Firewall or COMODO Internet Security Premium or COMODO Antivirus or COMODO Internet Security Complete (version 2013) or COMODO Internet Security Pro

by COMODO ( or Comodo CA (

Description: Guard32.dll is not essential for the Windows OS and causes relatively few problems. Guard32.dll is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 139,008 bytes (27% of all occurrences), 143,104 bytes and 33 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. It is not a Windows system file. 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. Guard32.dll is certified by a trustworthy company. The process is loaded during the Windows boot process (see Registry key: AppInit_DLLs). Guard32.dll is able to record keyboard and mouse inputs and manipulate other programs. Therefore the technical security rating is 65% dangerous; however you should also read the user reviews.

Uninstalling this variant: There is a possibility to do the following:
  1) uninstall COMODO Internet Security from your computer using the Control Panel applet Uninstall a Program
  2) ask for help from Support
  3) check if there is a newer version available.

Recommended: Identify guard32.dll related errors

If guard32.dll is located in a subfolder of C:\Windows, the security rating is 55% dangerous. The file size is 301,264 bytes (17% of all occurrences), 301,224 bytes and 26 more variants. The program has no visible window. The guard32.dll file is digitally signed. There is no detailed description of this service. It can change the behavior of other programs or manipulate other programs. The guard32.dll file is not a Windows system file. The process starts upon Windows startup (see Registry key: AppInit_DLLs). The file is a Verisign signed file. Guard32.dll is able to record keyboard and mouse inputs and manipulate other programs.

Important: Some malware disguises itself as guard32.dll, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the guard32.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.


User Comments

Part of Comodo Firewall
Its a part of comodo firewall :)
It's apparently part of Comodo firewall
Its Part of Comodo Firewall And IAM SURE But Still Do More Research About It .
Do not remove, firewall will not work
COMODO Internet Security
  nunomiguel1975   (further information)
It's Part Of The Comodo Firewall. It's A dll File And If Removed Your Firewall Will Not Work Properly Thus You Will Need To Redownload It To Fix
  Green   (further information)
Part of Comodo Suite. Causes problems on some installations of Qt Creator.
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of guard32.dll: based on 36 votes with 9 reviews. 28 users think guard32.dll is essential for Windows or an installed application. 2 users think it's probably harmless. 3 users think it's neither essential nor dangerous. 2 users suspect danger. One user thinks guard32.dll is dangerous and recommends removing it. 2 users don't grade guard32.dll ("not sure about it").

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Best practices for resolving guard32 issues

A clean and tidy computer is the key requirement for avoiding problems with guard32. 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.

To help you analyze the guard32.dll process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

guard32.dll [all]