Error Code B4259F “Virus” Removal

Error Code B4259F “Virus” RemovalError Code B4259F “Virus” RemovalError Code B4259F “Virus” Removal

This page aims to help you remove the Error Code B4259F “Virus” . These Error Code B4259F “Virus”  removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows. “Code erreur b4259f” and “erreur b4259f” are the two most prominent phrases incoming for this critter.

Not only does this page provides you with a removal guide, we also provide you with a brief about what exactly it is that you are dealing with.

What is Code erreur b4259f ?

According to security experts, the Code erreur b4259f “Virus”   is not classified as a virus. Instead what you are up against is typically known as an adware application. An adware is a program that is non-malicious in nature and does not cause direct harm to the computer in which it resides, it’s purpose is to merely display Ads. A virus, on the other hand, is a piece of programming code that is malicious in its intent and will cause you significant problems – data theft and corruption, resource hijacking, ransom threats and more. However, this is not to say that there is no need to remove adware. Even though its not a virus and it does not pose as a serious threat, there are still negative side-effects of the Code erreur b4259f “Virus”  that you are better off without.

This program is designed to be able to integrate itself with all the browsers in your computer, be it Chrome, Firefox or Internet Explorer. Once it has wormed its way into your browsers, it will start to collect data and information about your browsing patterns and history, possibly also search queries and site visits. All these information that it has gathered will go towards helping it to generate suitable and believable ads to display to you. These ads are catered specially for you according to your taste and preferences (as analyzed by the algorithm). They may be in the form of banners, pop-up ads or boxes or even as a separate window. They may feature anything from deals to coupons to even, proclaiming that you are the recipient of a sudden windfall. Regardless of the messages that it touts or the form in which it takes, always bear in mind to not click on the ads.

Why should you not click on the ads?

The aim of the creators is to get you to click on the ads. Therefore, once you have done that, they would have succeeded.

Upon clicking on the ads, you will be directed to another webpage. The webpage that you are being directed to can vary vastly in terms of what it is and how detrimental the page is for you, as an unsuspecting user.

The page that you are being directed to may be lifted directly from your browsing history. Such pages, then, will not be of any use to you as you would have had known about the deals prior to clicking on the ads. It’s just a way to milk you for money as your click will make a tiny amount of profit for someone. There are also times when the page that you are being directed to is a one of the many third-party’s pay-per-click sites that are rampant on the Internet. When you enter such pages, a certain amount of money will be credited to the creator’s account. These sites are typically chained, so you may have to click multiple times on multiple sites in order to get somewhere useful. If you even click on an Ad and it doesn’t take you to the promised site just shut down the whole page. Chances are you won’t get anything useful anyway.

Sometimes, you might even be directed to a page that doubles up as a portal for other adware to access and invade your computer. If you do happen to be directed to such sites, you will notice an increased number of ads appearing.

Occasionally, you might also be directed to a page that aggressively prompts and promotes the download of a certain software. In such cases then, regardless of how “great” the software might seem to be, do not download said software. The software will typically be of lower quality than established software and/or cost more. The only way such software typically sells is through aggressive advertising – exactly what you are currently a victim of.

How does infection happen?

It is always good to know how you had gotten infected in the first place, so as to be able to better prevent a re-infection from occurring.

According to our experts’ research, the most common way in which infection occurs is when people download one of the many free and illegal programs that are readily available on the Internet. These free programs have, more often than not, another program that is being tied to it, in this case, Error Code B4259F . This resultant bundle is then being made available online. Thus, when one downloads the program, it is not only the program in question that is being downloaded, but the bundle.

If you suspect this is how you had gotten infection, fret not. Programs can only function after it has been installed onto the computer. Therefore, the most important stage is actually during the installation. During installation, choose “Custom Installation” instead of “Automatic Installation”. This is where you are provided with a list of the files that are to be installed onto your computer. Look through the list carefully, and remove any names which are unfamiliar and strange to you and you are good to go!


Name Error Code B4259F
Type Browser Hijacker
Danger Level Medium  (Could easily mislead you into paying for low quality goods)
Symptoms Excessive display of ads, browser redirects and other annoyance.
Distribution Method Program bundling, direct installation and download, torrents and other dangerous sites.
Detection Tool Error Code B4259F  may be difficult to track down. Use SpyHunter – a professional parasite scanner – to make sure you find all files related to the infection.

Keep in mind, SpyHunter’s malware detection tool is free. To remove the infection, you’ll need to purchase the full version.
More information about SpyHunter and steps to uninstall.


Error Code B4259F Removal

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Error Code B4259F “Virus” Removal

Reboot in Safe Mode (use this guide if you don’t know how to do it).

This was the first preparation.

Error Code B4259F “Virus” Removal

Reveal All Hidden Files and Folders.

  • Do not skip this  – Error Code B4259F  may have hidden some of its files.

Hold together the Start Key and R. Type appwiz.cpl –> OK.

Error Code B4259F “Virus” Removal

You are now in the Control Panel. Look for suspicious entries. Uninstall it/them.

Type msconfig in the search field and hit enter. A window will pop-up:

Error Code B4259F “Virus” Removal

Startup —> Uncheck entries that have “Unknown” as Manufacturer.

Error Code B4259F “Virus” Removal

Hold the Start Key and R –  copy + paste the following and click OK:

notepad %windir%/system32/Drivers/etc/hosts

A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

Error Code B4259F “Virus” Removal

If there are suspicious IPs below “Localhost” – write to us in the comments.

Error Code B4259F “Virus” Removal

Right click on the browser’s shortcut —> Properties.

NOTE: We are showing Google Chrome, but you can do this for Firefox and IE (or Edge).

Error Code B4259F “Virus” Removal

Properties —–> Shortcut. In Target, remove everything after .exe.

Error Code B4259F “Virus” Removal

Error Code B4259F “Virus” Removal  Remove Error Code B4259F  from Internet Explorer:

Open IE, click  Error Code B4259F “Virus” Removal —–> Manage Add-ons.

Error Code B4259F “Virus” Removal

Find the threat —> Disable. Go to Error Code B4259F “Virus” Removal —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

Error Code B4259F “Virus” Removal Remove Error Code B4259F  from Firefox:

Open Firefoxclick  Error Code B4259F “Virus” Removal  ——-> Add-ons —-> Extensions.

Error Code B4259F “Virus” Removal

Find the adware/malware —> Remove.
Error Code B4259F “Virus” RemovalRemove Error Code B4259F  from Chrome:

Close Chrome. Navigate to:

 C:/Users/!!!!USER NAME!!!!/AppData/Local/Google/Chrome/User Data. There is a Folder called “Default” inside:

Error Code B4259F “Virus” Removal

Rename it to Backup Default. Restart Chrome.

  • At this point the threat is gone from Chrome, but complete the entire guide or it may reappear on a system reboot.

Error Code B4259F “Virus” Removal

Press CTRL + SHIFT + ESC simultaneously. Go to the Processes Tab. Try to determine which ones are dangerous. Google them or ask us in the comments.


Right click on each of the problematic processes separately and select Open File LocationEnd the process after you open the folder, then delete the directories you were sent to.

Error Code B4259F “Virus” Removal

Error Code B4259F “Virus” Removal

Type Regedit in the windows search field and press Enter.

Inside, press CTRL and F together and type the threat’s Name. Right click and delete any entries you find with a similar name. If they don’t show this way, go manually to these directories and delete/uninstall them:

  • HKEY_CURRENT_USER—-Software—–Random Directory. It could be any one of them – ask us if you can’t discern which ones are malicious.
    HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
    HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random

Remember to leave us a comment if you run into any trouble!


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Nicole Tay

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