Agacelebir is an application that can make your main web browser operate in a different way. In most cases, Agacelebir can make some changes to the browser’s homepage and search engine settings and install some new add-ons without your approval.


The Agacelebir virus is annoying and can interrupt your browsing with hundreds of sponsored commercials

The reason that you’re currently on this page is probably that you may not agree with your browser’s recent behavior. Whether you have set Chrome, Edge, Mozilla or another web browser as your main one, it most likely has some new and unfamiliar search engine, a new toolbar or a change in the homepage domain and practically floods your screen with all kinds of pop-up ads, banners, and notifications. And, to your disappointment, no matter how hard you try to uninstall those changes and remove the ads, they simply don’t want to go away – when you load a web page, they appear again. This browser-related problem has to do with a program called Agacelebir and, in the next, paragraphs, we will tell you more about it. In general, Agacelebir is an application that specializes in the promotion of various paid advertisements such as banners, pop-ups, new browser windows, colored boxes, text messages, redirect messages, and similar commercial content. The program operates by making some changes inside the main web browser and forcing it to display sponsored content on top of the search results. Due to this behavior, Agacelebir is categorized as a browser hijacker and is typically removed from most computers without regret.

Does Agacelebir have virus features?

While Agacelebir can make you mad at your own browser, this program is nothing like a virus. Yes, as a typical browser hijacker, Agacelebir is annoying and can interrupt your browsing with hundreds of sponsored commercials or impose some unwanted changes to your homepage and search engine, but it cannot cause significant damage to your computer. For instance, unlike most viruses, Agacelebir and Top Captcha Solver cannot crash your entire system, damage the data that you store on it, or demand a ransom from you just like the infamous Ransomware virus does. Nonetheless, for several reasons this software is considered to be potentially unwanted and is usually uninstalled from the system without a second thought. The reason is, the browser hijacker tends to use some aggressive methods in order to push its ads and to make you click on them. For instance, the ad-displaying activity on your screen may sometimes get so intense that your browser may become unresponsive to your commands. Besides, some of the created ads may not be as harmless as they seem and being redirected to potentially malicious sites is not unlikely if you click on them.

The removal guide below, however, provides a solution to the above-described disturbance and is an effective way to uninstall Agacelebir and remove its potentially unwanted commercials. Its thorough guidelines have been designed to help you manually deal with the browser hijacker but if your patience has been drained, you can use the automatic Agacelebir removal tool to get rid of the annoying application.


Name Agacelebir
Type  Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms  Users may experience spontaneous redirects to pages that they may not want to visit.
Distribution Method Browser Hijackers can often be distributed as free components to other applications or inside torrents and via free download sites.
Detection Tool

anti-malware offerOFFER *Read more details in the first ad on this page, EULA, Privacy Policy, and full terms for Free Remover.

Remove Agacelebir virus

If you have a Windows virus, continue with the guide below.

If you have a Mac virus, please use our How to remove Ads on Mac guide.

If you have an Android virus, please use our Android Malware Removal guide.

If you have an iPhone virus, please use our iPhone Virus Removal guide


Some of the steps will likely require you to exit the page. Bookmark it for later reference.

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



Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab (the “Details” Tab on Win 8 and 10). Try to determine which processes are dangerous. 


Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

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    After you open their folder, end the processes that are infected, then delete their folders. 

    Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections. 


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


    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:


    Startup —> Uncheck entries that have “Unknown” as Manufacturer or otherwise look suspicious.


    To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

    If you want to avoid the risk, we recommend downloading SpyHunter
    a professional malware removal tool.

    More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

    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:

    hosts_opt (1)

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

    Open the start menu and search for Network Connections (On Windows 10 you just write it after clicking the Windows button), press enter.

    1. Right-click on the Network Adapter you are using —> Properties —> Internet Protocol Version 4 (ICP/IP), click  Properties.
    2. The DNS line should be set to Obtain DNS server automatically. If it is not, set it yourself.
    3. Click on Advanced —> the DNS tab. Remove everything here (if there is something) —> OK.



    • After you complete this step, the threat will be gone from your browsers. Finish the next step as well or it may reappear on a system reboot.

    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).


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

    Browser Hijacker Removal Instructions

    ie9-10_512x512  Remove Agacelebir from Internet Explorer:

    Open IE, click  IE GEAR —–> Manage Add-ons.

    pic 3

    Find the threat —> Disable. Go to IE GEAR —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

    firefox-512 Remove  Agacelebir from Firefox:

    Open Firefoxclick  mozilla menu  ——-> Add-ons —-> Extensions.

    pic 6

    chrome-logo-transparent-backgroundRemove  Agacelebir from Chrome:

    Close Chrome. Navigate to:

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

    Rename the Folder to Backup Default

    Rename it to Backup Default. Restart Chrome.


    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 up 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

    If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!


    About the author


    Lidia Howler

    Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.

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