What is this IstDownload.net popup? I keep getting it on my browser to prevent me from searching online efficiently. I exit out the page but it will pop back up each time I restart the browser. I also notice a lot of annoying pop ups all over the webs. They are everywhere. And I can’t seem to stop them. I was worried that I might have got a virus or malware on my computer. What do I do?

IstDownload.net Popup – How to Remove?

The IstDownload.net popup that annoys you when you are surfing online and gives you constant troubles is categorized as a browser adware program that cannot be completely removed by antivirus programs. This adware issue not only attacks browsers including Internet Explorer, Google Chrome, Mozilla Firefox and Safari on Mac, but affects the overall performance of the system with other potential problems. It’s also believed to be able to collect your personal online data from browsing histories on the affected browsers to invade your privacy. Hence, the IstDownload.net popup should be deleted for good. Considering it cannot be removed by antivirus, a manual process is contained in this passage to help.

How does this adware program get onto your browser? Can it be prevented by security programs? Generally, we believe that the install of this adware can be done without permission in a bundle with freeware. That is to say, the IstDownload.net can sneak onto your computer when you download certain unknown or unfriendly programs online from unidentified resources. Browser defaults can be modified and system performance will be affected as well. Soon as the hijacker gets on your browsers, it will completely mess them up by creating constant disorders including:

Home page is replaced and favorite search engines are disabled.
Unknown toolbars or extensions are automatically installed.
Annoying pop-up ads are everywhere on the webs.
Users are constantly redirected to unwanted results.
Browser is slow in loading pages.

How to delete IstDownload.net hijacker on browsers completely?
You may find nothing when running security scans on the computer. Online scans may not pick up anything related to the adware either. In this case, a manual process is introduced here which will require certain levels of computer skills to perform in order to get rid of the popup hijacker completely. Besides from resetting browser defaults including home page and getting rid of unfamiliar extensions, users will also need to go through the process of checking for odd program files and registry errors which could be caused by potential malware problems brought onto the computer by this browser hijacker. If anything goes wrong, unpredictable consequences could be caused.

Suggestions: If you are not a computer literate who knows a lot about computers, contact YooSecurity Online PC Experts for help now to delete this IstDownload.net pop up hijacker and prevent things from getting worse:

The Hijacker Popup Screenshot

* The above screenshot shows a random popup by this IstDownload.net hijacker. You will receive these popups whenever surfing online. They not only block you from searching online efficiently, but may trick you into potential cyber scams and drop PUPs onto your computer without notice. The efficient way to get rid of these annoying popups is to manually delete the adware program from your computer completely. Otherwise, more problems can be caused the longer the adware resides on the system.

How to get rid of IstDownload.net pop up adware from computer?
As mentioned above, manual removal is much more efficient and guarantees a successful uninstall of this adware from computer compared to anti-virus removal. As the browser hijacker is not only able to reset browser defaults to cause disorders, but adjust certain files and registry keys to make its effect last longer. Thus, besides from resetting browser defaults, uninstalling unknown extensions and clearing browsing histories manually, users will also need to check for program files and registry errors in order to completely fix this IstDownload.net browser popup problem. A guide is contained below to walk you through the basic steps to remove the pop up hijacker.

Browser Hijacker Manual Removal Instructions

A step-by-step guide to remove the hijacker popup manually from Mozilla Firefox:

1. Windows Task Manager.

Press CTRL+ALT+DELETE or CTRL+SHIFT+ESC; or pull up Run box from Start menu to type in taskmgr
Right click on items you want to end, select Go To Process
Click on End Process
Click on Processes tab
End process of all Firefox items/ IstDownload.net popup hijacker

2. Delete virus files and adjust registries from system.

Click on Start button
Control Panel
Search for “folder options” on top right corner
Click on View tab
Show hidden files, folders, and drives

C:\Users\profile name here\AppData\-

* Files and registries of the IstDownload.net pop up adware can be changed or renamed time from time in order to keep the infection functioning longer. If you are not able to identify the related items, contact online experts for help instantly.

3. Reset Firefox.

Click on Tools – Options
Under General tab – reset home page on Firefox
Under Privacy tab – clear browsing histories

4. Close out all the windows and restart the system to take effects.

Video guide on browser hijacker removal:

Alternatively, you can view this browser hijacker removal video guide directly on our website:


The IstDownload.net popup is a browser adware program that can hijack your browsers on the computer and cause you constant troubles whenever you are searching online. It contains misleading information which will be displayed to you annoyingly in forms of pop ups. You can come across these pop ups on random websites. Sometimes the pop ups may appear as webpages, fake online surveys or police warnings. With these pop ups, computer hacker can benefit more out of computer users by tricking them into all kinds of cyber scams. To remove the pop up hijacker, manual removal is efficient to guarantee a complete removal of the hijacker and an overall clean of the computer. Expertise can be required during the manual process to accurate the steps in getting rid of this adware.

Note: Can’t fix the browser problem by online instructions? The files listed on the instruction do not match with those on your computer? Please contact YooSecurity Online Experts for help now to completely remove the IstDownload.net pop-up hijacker from your computer as soon as possible:

Published by Tony Shepherd & last updated on May 13, 2014 2:51 am

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