How to remove the NP Helper Class malware

Some anti-malware programs classify NPIEAddOn.dll as a harmful extension to Internet Explorer: for instance Adware.DoubleD or SecurityRisk.Downldr (detected by Symantec), and Internet Saving Optimizer (detected by Sophos). Add-ons like this can display ads, slow down your computer and cause various other errors. If you can't remember installing the associated NP Helper Class software, it's no surprise. In most cases, this kind of adware is installed on the side when you install a freeware product like a Youtube Downloader or a PDF Converter. In the following selection, you can read more about NP Helper Class and how to get rid of it.

Click here to automatically remove the NP Helper Class malware

NPIEAddOn.dll file information

The process known as NP Helper Class or Internet Saving Optimizer belongs to software Internet Saving Optimizer or NP Helper Class or Network Optimizer by unknown.

Description: NPIEAddOn.dll is not essential for the Windows OS and causes relatively few problems. The file NPIEAddOn.dll is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 196,608 bytes (86% of all occurrences), 176,128 bytes or 172,032 bytes. 
This .dll file is a Browser Helper Object (BHO) that runs automatically every time you start your web browser. BHOs are not stopped by personal firewalls, because they are identified by the firewall as part of the browser itself. BHOs are often used by adware and spyware. IDs used by this BHO include 35B8D58C-B0CB-46b0-BA64-05B3804E4E86. There is no information about the author of the file. The program has no visible window. NPIEAddOn.dll is able to monitor web browsers. NPIEAddOn.dll is not a Windows system file. The program can be uninstalled in the Control Panel. Therefore the technical security rating is 52% dangerous.

Uninstalling this variant: If problems with Internet Saving Optimizer or Network Optimizer come up, you can also uninstall the program using the Control Panel ⇒ Uninstall a Program.

Recommended: Identify NPIEAddOn.dll related errors

Important: Some malware camouflages itself as NPIEAddOn.dll, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Adware.DoubleD or SecurityRisk.Downldr (detected by Symantec), and Internet Saving Optimizer (detected by Sophos). Therefore, you should check the NPIEAddOn.dll process on your PC to see if it is a threat. If NP Helper Class 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 ▾
  1. In Internet Explorer, press the key combination Alt + X to open the Tools menu.
  2. Click Internet options.
  3. Click the Advanced tab.
  4. Click the Reset... button.
  5. Enable the Delete personal settings option.
This will reset your Internet Explorer to its default settings. Your browser will start with the familiar start page and search engine—without popups, ads, cookies, but all browser add-ons are deleted too [1]. Make cleaning up your browser and your computer simpler and safer with Security Task Manager.


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Best practices for resolving NPIEAddOn issues

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

Other processes

NPIEAddOn.dll [all]