NetNucleus is a browser help object – or BHO – that may download and install itself on your computer as an Internet Explorer toolbar. NetNucleus may track what website you visit and your search queries so that it can launch targeted pop up ads and other advertisements at you while you browse the internet and even when you are offline. NetNucleus may hide from you and secretly update itself on your computer without your permission. Because of this, NetNucleus toolbar is often hard to uninstall or remove. NetNucleus is similar to Mirar, NN_Bar, GetMirar.
GET RID of NetNucleus
- Manually remove NetNucleus with step-by-step instructions
- Download Spyware Doctor to automatically remove NetNucleus
- You can download award-winning, anti-badware software SpywareDoctor to easily remove NetNucleus. Want to know why I dig SpywareDoctor? Read my review.
Do You Have NetNucleus?
When you’re infected with badware — whether it’s NetNucleus, spyware, adware, a Trojan, or a virus — there are a few key symptoms. Have you noticed…
- Slow computer performance: It just takes one parasite like NetNucleus to slow your computer dramatically. If your PC takes longer than usual to reboot, or if your Internet connection is unusually slow, you may be infected with NetNucleus.
- New desktop shortcuts or switched homepage: Badware like NetNucleus may change your Internet settings to redirect your homepage to another site. Badware can even add desktop shortcuts to your PC.
- Annoying popups: Badware can bombard your computer with popup ads, even when you’re not online. Through these popups, you may be tricked into downloading more spyware.
How to Remove NetNucleus Manually
Before we get started, you should backup your system and your registry, so it’ll be easy to restore your computer if anything goes wrong.
To remove NetNucleus manually, you need to delete NetNucleus files. Not sure how to delete NetNucleus files? Click here, and I’ll show you. Otherwise, go ahead and…
Remove NetNucleus processes:
Remove NetNucleus registry values:
HKEY_CLASSES_ROOT\clsid\{36c5e437-57d2-44c9-b413-6b198d442549}
HKEY_LOCAL_MACHINE\software\classes\clsid\{36c5e436-57d2-44c9-b413-6b198d442549}
HKEY_LOCAL_MACHINE\software\classes\clsid\{36c5e437-57d2-44c9-b413-6b198d442549}
HKEY_LOCAL_MACHINE\software\microsoft\internet explorer\toolbar\{36c5e436-57d2-44c9-b413-6b198d442549}
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\explorer\browser helper objects\{36c5e437-57d2-44c9-b413-6b198d442549}
Unregister NetNucleus DLL files:
winnb40.dll
winnb57.dll
Detect and Remove these NetNucleus files:
bundle.bin
mirarsetup.inf
notes.txt
Note: In any NetNucleus files I mention above, “%UserProfile%” is a variable referring to your current user’s profile folder. If you’re using Windows NT/2000/XP, by default this is “C:\Documents and Settings\[CURRENT USER]” (e.g., “C:\Documents and Settings\JoeSmith”). If you have any questions about manual NetNucleus removal, go ahead and leave a comment.
How Do You Remove NetNucleus Files?
Need help figuring out how to delete NetNucleus files? While there’s some risk involved, and you should only manually remove NetNucleus files if you’re comfortable editing your system, you’ll find it’s fairly easy to delete NetNucleus files in Windows.
How to delete NetNucleus files in Windows XP and Vista:
- Click your Windows Start menu, and then click “Search.”
- A speech bubble will pop up asking you, “What do you want to search for?” Click “All files and folders.”
- Type a NetNucleus file in the search box, and select “Local Hard Drives.”
- Click “Search.” Once the file is found, delete it.
How to stop NetNucleus processes:
- Click the Start menu, select Run.
- Type taskmgr.exe into the the Run command box, and click “OK.” You can also launch the Task Manager by pressing keys CTRL + Shift + ESC.
- Click Processes tab, and find NetNucleus processes.
- Once you’ve found the NetNucleus processes, right-click them and select “End Process” to kill NetNucleus.
How to remove NetNucleus registry keys:
Because your registry is such a key piece of your Windows system, you should always backup your registry before you edit it. Editing your registry can be intimidating if you’re not a computer expert, and when you change or a delete a critical registry key or value, there’s a chance you may need to reinstall your entire system. Make sure your backup your registry before editing it.
- Select your Windows menu “Start,” and click “Run.” An “Open” field will appear. Type “regedit” and click “OK” to open up your Registry Editor.
- Registry Editor will open as a window with two panes. The left side Registry Editor’s window lets you select various registry keys, and the right side displays the registry values of the registry key you select.
- To find a registry key, such as any NetNucleus registry keys, select “Edit,” then select “Find,” and in the search bar type any of NetNucleus’s registry keys.
- As soon as NetNucleus registry key appears, you can delete the NetNucleus registry key by right-clicking it and selecting “Modify,” then clicking “Delete.”
How to delete NetNucleus DLL files:
- First locate NetNucleus DLL files you want to delete. Open your Windows Start menu, then click “Run.” Type “cmd” in Run, and click “OK.”
- To change your current directory, type “cd” in the command box, press your “Space” key, and enter the full directory where the NetNucleus DLL file is located. If you’re not sure if the NetNucleus DLL file is located in a particular directory, enter “dir” in the command box to display a directory’s contents. To go one directory back, enter “cd ..” in the command box and press “Enter.”
- When you’ve located the NetNucleus DLL file you want to remove, type “regsvr32 /u SampleDLLName.dll” (e.g., “regsvr32 /u jl27script.dll”) and press your “Enter” key.
That’s it. If you want to restore any NetNucleus DLL file you removed, type “regsvr32 DLLJustDeleted.dll” (e.g., “regsvr32 jl27script.dll”) into your command box, and press your “Enter” key.
Did NetNucleus change your homepage?
- Click Windows Start menu > Control Panel > Internet Options.
- Under Home Page, select the General > Use Default.
- Type in the URL you want as your home page (e.g., “http://www.homepage.com”).
- Select Apply > OK.
- You’ll want to open a fresh web page and make sure that your new default home page pops up.
NetNucleus Removal Tip
Is your computer acting funny after deleting any NetNucleus files? I recommend using a program like File Recover from PC Tools. File Recover saves deleted files that otherwise can’t be recovered by Windows operating sytem.
Want to save time finding NetNucleus files? Download Spyware Doctor, let it find the NetNucleus files for you, and then manually delete NetNucleus files.
How Did You Get NetNucleus?
Wondering how NetNucleus ended up on your PC? If you’re infected with NetNucleus or other badware, perhaps you were using…
- Freeware or shareware: Did you download and install shareware or freeware? These low-cost or free software applications may come bundled with spyware, adware, or programs like NetNucleus. Sometimes adware is attached to the free software to “pay” developers for the cost of creating the software, and more often spyware is secretly attached to free software to harm your computer and steal your personal and financial information.
- Peer-to-peer software: Do you use a peer-to-peer (P2P) program or other application with a shared network? When you use these applications, you put your system at risk for unknowingly downloading an infected file, including applications like NetNucleus.
- Questionable websites: Did you visit a website that’s of questionable nature? When you visit malicious sites that are fishy and phishy, badware may be automatically downloaded and installed onto your computer, sometimes including applications like NetNucleus. I recommend you use Firefox web browser, if you don’t already.
Understanding NetNucleus
If you’re infected with NetNucleus, you should know what you’re fighting. I’ll explain some definitions related to NetNucleus.
NetNucleus May Be a Browser Helper Object
Browser helper objects (BHO) are often created by website authors to customize and control Internet Explorer and the way websites appear on IE. Browser helper objects usually load when Internet Explorer starts up, and BHO’s may share IE’s memory and perform various actions on any available windows and modules. It’s possible for browser helper objects to detect events, create additional windows to display information, and monitor your messages and actions.
NetNucleus is also known as: NetNucleus Spyware, NetNucleus Tool Bar, NetNucleus Virus, Adware.NetNucleus, NetNucleus Adware, NetNucleus com, NetNucleus Toolbar, NetNucleus Tolbar,

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