Nsurlsessiond Mac

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*Source of claim SH can remove it.


Nsurlsessiond is a browser hijacker responsible for the sudden page-redirects in Mac browsers as well as for changes in the browsers’ settings. Nsurlsessiond is supposed to promote different sites and show ads to the user, thereby making a profit for its creators.


As soon as this browser-hijacking app enters the user’s browser, its presence there is noticed because it modifies the search engine and sets a new address for the browser’s homepage. These changes allow the hijacker to redirect the user to its partnering sites, which, in turn, pay to get promoted by the hijacker. Both sides profit at the expense of the end-user, who is forced to put up with the countless adverts, page-redirects, and unwanted changes caused in their browser. The browsers that get hijackers like Nsurlsessiond, Search Marquis, Bing redirect the most often are Firefox, Safari, and Chrome because they are the ones used by the biggest number of people. Other browsers could get hijackers too.

Nsurlsessiond for Mac

Nsurlsessiond for Mac is a browser-hijacking app that is compatible with Mac browsers and installs in them so as to turn them into ad-generating platforms. Nsurlsessiond for Mac is primarily used to spread redirects to different sites, thereby artificially boosting their traffic and ratings.

The presence of the hijacker itself doesn’t harm the computer, but this doesn’t mean it is safe to keep such an app on your Mac. The main security concern related to this kind of software comes from the rarely-controlled stream of ads and page redirects. In order to generate as much advertising revenue as possible, the hijacker is likely to spam you with advertising materials from all kinds of sources. This, in turn, makes the possibility of encountering a virus such as a Trojan horse or Ransomware a real threat that shouldn’t be ignored.

What is Nsurlsessiond?

Nsurlsessiond is a Mac app of the browser hijacker family that works similarly to a browser extension. The main difference between Nsurlsessiond and a normal extension is that the former is mainly designed to make a profit through ads/page redirects instead of improving your browsing experience.

This, combined with the fact that you are in greater danger of encountering Trojans, Worms, Ransomware, and Spyware while the hijacker is in your system, is more than enough of a reason to make sure that this aggressive app gets uninstalled from your Mac as soon as possible. The guide we will show you in a bit will give you all the information you will need to successfully remove the unpleasant browser-hijacking app.

The Nsurlsessiond app

The Nsurlsessiond app is a form of browser-hijacking software with the ability to force your browser to spam you with ads and redirect your online surfing. The Nsurlsessiond app can automatically make changes in the browser without having been authorized to do so by you.

The only thing you can do in such a case in order to return things back to normal is to uninstall the browser hijacker and if you follow the instructions we have prepared on this page, you should be able to do so with ease. 


TypeBrowser Hijacker
Danger LevelMedium (nowhere near threats like Ransomware, but still a security risk)
Detection Tool

*Source of claim SH can remove it.

Remove Nsurlsessiond Malware from Mac


*Source of claim SH can remove it.

The first thing you need to do is to Quit Safari (if it is opened). If you have trouble closing it normally, you may need to Force Quit Safari:

You can choose the Apple menu and click on Force Quit.

Alternatively you can simultaneously press (the Command key situated next to the space bar), Option (the key right next to it) and Escape (the key located at the upper left corner of your keyboard).

If you have done it right a dialog box titled Force Quit Applications will open up.

In this new dialog window select Safari, then press the Force Quit button, then confirm with Force Quit again.

Close the dialog box/window.



*Source of claim SH can remove it.

Start Activity Monitor by opening up Finder, then proceed to activity-monitor

Once there, look at all the processes: if you believe any of them are hijacking your results, or are part of the problem, highlight the process with your mouse, then click the “i” button at the top. This will open up the following box:


Now click on Sample at the bottom:


Do this for all processes you believe are part of the threat, and run any suspicious files in our online virus scanner, then delete the malicious files:

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    The next step is to safely launch Safari again. Press and hold the Shift key while relaunching Safari. This will prevent Safari’s previously opened pages from loading again. Once Safari is opened up, you can release the Shift key.

    On the off chance that you are still having trouble with scripts interrupting the closing of unwanted pages in Safari, you may need to take some additional measures.

    First, Force Quit Safari again.

    Now if you are using a Wi-Fi connection turn it off by selecting Wi-Fi off in you Mac’s Menu. If you are using a cable internet (Ethernet connection), disconnect the Ethernet cable.


    Re-Launch Safari but don’t forget to press and hold the Shift button while doing it, so no previous pages can be opened up. Now, Click on Preferences in the Safari menu,

    Preferences in Safari

    and then again on the Extensions tab,

    extensions in safari

    Select and Uninstall any extensions that you don’t recognize by clicking on the Uninstall button. If you are not sure and don’t want to take any risks you can safely uninstall all extensions, none are required for normal system operation.

    The threat has likely infected all of your browsers. The instructions below need to be applied for all browsers you are using.

    Again select Preferences in the Safari Menu, but this time click on the Privacy tab,
    Privacy in Safari

    Now click on Remove All Website Data, confirm with Remove Now. Keep in mind that after you do this all stored website data will be deleted. You will need to sign-in again for all websites that require any form of authentication.

    Still in the Preferences menu, hit the General tab

    General Tab in Safari

    Check if your Homepage is the one you have selected, if not change it to whatever you prefer.
    Default Home Page

    Select the History menu this time, and click on Clear History. This way you will prevent accidentally opening a problematic web page again.

    firefox-512 How to Remove Nsurlsessiond From Firefox in OSX:

    Open Firefoxclick on mozilla menu (top right) ——-> Add-onsHit Extensions next.

    pic 6

    The problem should be lurking somewhere around here –  Remove it. Then Refresh Your Firefox Settings.

    chrome-logo-transparent-backgroundHow to Remove Nsurlsessiond From Chrome in OSX:

     Start Chrome, click chrome menu icon —–>More Tools —–> Extensions. There,  find the malware and  select  chrome-trash-icon.

    pic 8

     Click chrome menu icon again, and proceed to Settings —> Search, the fourth tab, select Manage Search Engines.  Delete everything but the search engines you normally use. After that Reset Your Chrome Settings.

    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


    Brandon Skies

    Brandon is a researcher and content creator in the fields of cyber-security and virtual privacy. Years of experience enable him to provide readers with important information and adequate solutions for the latest software and malware problems.

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