Remove Ads by KeyStream Virus (Uninstall Guide)

This article aims to help users remove Ads by KeyStream Virus from Chrome, Firefox, Internet Explorer and Safari, as well as their respective system.

Remove Ads by KeyStream Virus

Ads by KeyStream Virus is a type of rapid spreading malicious software, the kind of which is known as Adware in the anti-virus communities. The name is closely related to the main function of the virus – to create large amounts of advertisements and to display them in your browser without permission. Ads by KeyStream Virus does not have a pause button and cannot be turned off – the only way to stop the annoying Ads is to delete it from your machine and this could be a tricky business. Don’t worry – we’ll help.

What is important to realize is that while Ads by KeyStream Virus is certainly malicious it lacks the capability to hard your computer directly. Instead it works like a backdoor for other viruses and scam software. Thus it is very important NEVER to download anything that Ads by KeyStream Virus may offer you or click on the links that come with the Ads.

Be wary of Ads that appear as system messages

As part of the deception campaign that Ads by KeyStream Virus launches against you it is possible to see a large variety of warning that try to look as if they are generated from your own computer. Examples include messages about missing plug-ins, about required codecs and video players. You could also receive “free online scans” that have detected “many problems” with your computer – usually viruses or maybe errors in the registry. You are then offered to download the missing program or install a utility program that can fix the problem for free.

Do not trust any of this! As explained none of the problems are real and the programs you are offered to download are nothing but viruses or bloatware.

The links of Ads by KeyStream Virus are also not safe. There is a very good chance they will take you to cloned sites of real online shops where your account name and password will be recorded when you try to log in. Afterwards the hackers will access them and use them to log-in to the real site, steal your credit card numbers and make purchases in your name.

1: Enter Safe Mode.
2: Remove Ads by KeyStream Virus from Chrome, Firefox, Internet Explorer and Safari.
3: Remove the virus from browser shortcuts.
4: Uninstall the virus from your AddRemove Programs.
5: Permanently remove Ads by KeyStream Virus from Task Manager’s processes.
6: Delete the virus from Regedit and Msconfig.
7: Optimize your PC after the removal is done.

Remove Ads by KeyStream Virus (Uninstall)


Our first step here is a reboot in 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 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 W. 8 and 8.1 Users:

Click the Start button ,then Control Panel —> System and Security —> Administrative Tools —> System Configuration.Administrator permission required


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

Proceed to Step 2.

For Windows 10 Users:

  1. Open the Start menu.
  2. Click the power button icon in the right corner of the new Start menu to show the power options menu.
  3. Press and hold down the SHIFT key on the keyboard and click the Restart option while still holding down the SHIFT key.

Windows 10 will perform the reboot. Next do the following:

Click the Troubleshoot icon, then Advanced options —> Startup Settings. Click Restart.
After the reboot click on Enter Safe Mode With Networking (Fifth Option).

Continue with Step 2.


To remove parasite, you may have to meddle with system files and registries. Making a mistake and deleting the wrong thing may damage your system.
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Cleaning Ads by KeyStream Virus from your internet browsers is the first major step towards removing the virus. To do that you need to run Step 2 and Step 3 for every single browser that is currently installed on your machine. Don’t forget to include any browsers that are currently inactive, but are still installed as in the case of Internet Explorer (comes with every version of windows) for people that use Chrome, Mozilla or other alternatives.

ie9-10_512x512  For Internet Explorer Users:

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

pic 3

Find Ads by KeyStream Virus . Remove it by pressing Disable.

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.

Go to STEP 3.

firefox-512  For Mozilla Firefox Users:

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

Remove Ads by KeyStream Virus From Firefox

Ads by KeyStream Virus  should be somewhere around here –  Remove it.

Go to STEP 3.

chrome-logo-transparent-background For Google Chrome Users

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

Remove Ads by KeyStream Virus From Chrome

 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.

Go to STEP 3.

safari For Safari Users:

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

Go to STEP 3.


Right click on the browser’s shortcut, then click Properties.

NOTE: We are showing Google Chrome, but the method is the same for all browsers.


Once you’ve reached Properties —–> Shortcut (on the band at the top), then in the Target type field, REMOVE EVERYTHING AFTER .exe.

Continue with STEP 4.


Hold the Windows Key and R together. Write appwiz.cpl in the new field, then click OK.


You are now in the Control Panel. Search around for Ads by KeyStream Virus 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:


Hold the Windows Key and R againbut this time copy + paste the following and click OK:

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

A .txt file will open – don’t touch anything there. If you are hacked and someone has access to your PC, there will be a bunch of other IPs connected to you at the bottom. This is what a hosts file looks like:

hosts_opt (1)

If there are a bunch of strange IPs connecting to you below “Localhost” you may be hacked, and it’s best to ask us in the comments for directions.

Go to STEP 5.


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.


This is perhaps the most important and difficult step of the article and you need to follow the instructions carefully. A mistake could result in damage to your OS or other programs. If you are not feeling comfortable with the risk you can instead try the professional anti-malware remover we recommend. Not only will it clean Ads by KeyStream Virus for you without any chance of anything going wrong, but you can also use it to scan your computers for other viruses that may be hiding on your computer along Ads by KeyStream Virus.


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.

Move on to STEP 6.


Take a look at the following things:

Type msconfig in the search field and hit enter: you will be transported to a new window. 


Go in the Startup tab and Uncheck anything that has “Unknown” as Manufacturer.

Type Regedit in the windows search field and press Enter.

Once inside, press CTRL and F together and type the virus’s Name. Right click and delete any entries you find with a similar name. If you can’t find them this way, look in these directories, and delete the registries manually:

  • HKEY_CURRENT_USER—-Software—–Random numbers
    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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STEP 7 – Optimization

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 – How To Remove Guide’s Optimization Tips.