What is IS360Ext.dll?

IS360Ext.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 IS360Ext.dll is a Windows system file or if it belongs to an application that you can trust.

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IS360Ext.dll file information

The process known as IS360Ext or IObit Security (version 360 Shell Extension) belongs to software IObit Security (version 360, 360 RC) or Advanced Spyware Remover by IObit (

Description: IS360Ext.dll is not essential for the Windows OS and causes relatively few problems. IS360Ext.dll is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 42,256 bytes (80% of all occurrences), 38,672 bytes or 37,648 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. The program is not visible. The IS360Ext.dll file is a Verisign signed file. It is certified by a trustworthy company. The service has no detailed description. It can change the behavior of other programs or manipulate other programs. IS360Ext.dll is not a Windows system file. Therefore the technical security rating is 48% dangerous.

Uninstalling this variant: The developer IObit provides an update site and an uninstaller (Control Panel ⇒ Uninstall a Program ⇒ IObit Security 360 or IObit Security 360 RC).

Recommended: Identify IS360Ext.dll related errors

Important: Some malware camouflages itself as IS360Ext.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the IS360Ext.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 IS360Ext issues

A clean and tidy computer is the key requirement for avoiding problems with IS360Ext. 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 IS360Ext.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

IS360Ext.dll [all]