Removal Guide

Remove Ads by Thirteen Degrees

Parasite may reinstall itself multiple times if you don't delete its core files. We recommend downloading SpyHunter to scan for malicious programs installed with it. This may save you hours and cut down your time to about 15 minutes. 

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Ads by Thirteen Degrees belongs to a family of viruses commonly known as Adware. As you are probably already aware it specializes on generating an endless spam of ads. These can be incredibly annoying, but also dangerous. Any file provided and downloaded by Ads by Thirteen Degrees is potentially a virus.

A brief overview of Ads by Thirteen Degrees

Creating ads is the main thing that Ads by Thirteen Degrees does, but this doesn’t mean that the virus is harmless. The annoyance that stems from it can raise the blood pressure for everyone, but more importantly these ads can be a backdoor for other malware. Besides the usual type of “best deal” ads you can also see some additional pop-ups or warning messages containing several things. Some examples are listed below:

  • Installation of a missing plug-in.
  • Software downloads, often offering free anti-malware scanners.
  • Empty media player window that demands a specific video player to run.
  • Warnings about outdated programs on your computer that need updating.

DO NOT fall for these, every file downloaded through any of these offers will be a virus. In fact these are some of the most common methods viruses spread around the globe. Beside Ads by Thirteen Degrees you can also find similar offers in dangerous or fake sites or in download hubs with aggressive advertisement policy.

Thirteen Degrees

If you have suspicions that you have to actually update or install a suggested program (often the programs advertised are well known and popular to make the offer more believable) close the adware generated ads and open a standard Google search. Look for the software you want, go to the official download page and get your 100% virus free file from there.

A couple more tricks worth knowing

One of the other most common methods to spread malware are program bundles. Nowadays almost every popular or free program comes with an installer that contains at least several other programs as extras.There is nothing bad in this promoting scheme in general, but for the fact that often the extras inside will be adware. Less known or free programs are more likely to contain adware, because their authors need the extra revenue paid by Adware developers. To defend you should always select the advanced installation option. It allows you direct control over what exactly is getting installed and you can deny access to programs you don’t really need or seem suspicious.

Fake torrent/download sites are another common danger around the web. These sites do not contain real matherials to download. Instead they have an algorithm that reads whatever you wrote in your search bar and makes a file with the exact same name. A 100% match means top pages for most search engines. The file offered is a virus, despite the name. Learn to spot these by looking at the file extension – files you need can be of a variety of extensions, but viruses will always be an .exe file. DO NOT install .exe files acquired from random download sites!


How to Remove Ads by Thirteen Degrees


Our first step here is a reboot in Windows Safe Mode. If you already know how to do it, just skip this and proceed to Step 2. If you do not know how to do it, continue reading:

For Windows 98, XP, Millenium and 7 Users:

Restart your computer. To be sure you don’t miss the window of time when you need to press it, just spam F8 as soon as the PC starts booting. In the new menu, choose Safe Mode With Networking.


Proceed to Step 2.

For Windows 8 and Windows 8.1 Users:

 Press the Windows Key and R at the same time. Select the Boot tab in the new window that appears.


Then check the Safe Boot option and click OK.  Click  Restart in the new pop-up.

system- config

Proceed to Step 2.

For OS X Users:

When you Mac is turned off, press the Power Button. After you hear the Startup Sound, immediately press and hold the Shift key until the Apple logo appears.

Proceed to Step 2.


   Ads by Thirteen Degrees has infected ALL of your browsers. Apply the steps separately for each one.

ie9-10_512x512  For Internet Explorer Users:

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

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Find Ads by Thirteen Degrees . Disable it.

If your Home Page is different from the usual, click IE GEAR —–> Internet Options>edit the URL box with your preferred search engine, and click Apply.

firefox-512  For Mozilla Firefox Users:

Open Firefoxclick on mozilla menu (top right) ——-> Add-ons.

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Hit Extensions next.

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Ads by Thirteen Degrees  should be somewhere around here –  Remove it.

chrome-logo-transparent-background For Google Chrome Users

 Start Chrome, click chrome menu icon —–>More Tools —–> Extensions.


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In  Extensions,  find the virus and  select  chrome-trash-icon.

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 Click chrome menu icon   again, and proceed to Settings —> Search (the fourth tab), select Manage Search Engines.  Remove anything but the search engines you normally use.

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safari For Safari Users:

Open Safari, and click Safari —–>Preferences —–> Extensions—–>Uninstall the malware.


(Works for Windows XP, Windows 7, Windows 8, Windows 8.1)

Hold windows-buttonand R together. Write appwiz.cpl  in the new field, then click OK.


You are now in the Control Panel. Search around for Ads by Thirteen Degrees and anything else suspicious-looking.   Uninstall  it/them. Also, be extremely careful. Viruses often spend one last ditch effort to trick you into installing more of their kind. If you see a screen like this when you click Uninstallchoose NO:



This is perhaps the most important and difficult step, so be extremely careful. Open the Task Manager by right clicking on the Taskbar and choosing Start Task Manager.


Once it opens, choose the Processes Tab. Look at all of the processes in front of you and try to determine which ones are a virus. Google them or ask us in the comments and we will provide the best assistance we can. If the virus returns later on after you supposedly removed it, the reason is that you missed something here.


Right click on each of the virus processes separately and select Open File Location. Also, End the process after you open the folder. Just to make sure we don’t delete any programs you mistakenly took for a virus, copy the folders somewhere, then delete the directories you were sent to.

STEP 5 – Optimization

And that’s it. Well done for removing Ads by Thirteen Degrees. We’ve prepared a short and sweet optimization guide, specifically designed for users who just removed a virus. It is completely free, you do not need to download anything, and it’s not very time consuming. If you are interested, you can check it out here.

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