PUP.Optional.NetLiker.A Virus Removal Guide

My laptop is infected by PUP.Optional.NetLiker.A after clicking on an unknown link, this PUP virus has caused chaos on my machine! Now I need to spend a long time turning on my computer and opening a program, I try to remove this PUP virus by my AVG anti-virus, but the PUP virus keeps coming back after I restart the infected PC. How can I remove this malicious process completely from the laptop? Should I use another security tool? Any help will be appreciated.

Description of PUP.Optional.NetLiker.A Virus:

PUP.Optional.NetLiker.A is a nasty malicious process which can cause dangerous virus infection on the infected PC. Usually the PC users will suffer the virus infection while surfing on the Internet, especially when they click on the unsafe links on the unknown website or forum, some PC users even get the virus infection from the spam E-mail attachment. Once the PUP.Optional.NetLiker.A process has been activated, the infected PC will be under the attack in a short time. The security tools like anti-virus program or firewall may detect and remove the virus, but this PUP virus is able to come back after restarting the infected PC. So it is suggested that the PC users should remove the virus process in a manual way.

In general, once PUP.Optional.NetLiker.A is installed to the infected PC, the key system settings can be modified without PC user’s permission, that is why the infected PC will be very weird. The infected PC may suffer other virus infections because the PUP virus has the ability to download other viruses like Worm and browser hijack redirect from the malicious webpage. The security programs can be corrupted due to this nasty virus process as well, anyway, the PUP virus is extremely dangerous which needs to be removed as soon as possible to protect the infected PC.

The following instructions require certain levels of computer skills. If you’re not sure and are afraid to make any critical mistakes during the process, please live chat with YooCare Expert now.

How Can This Virus Attack the Computer?

How did you get PUP.Optional.NetLiker.A virus on your computer? Usually these kinds of the viruses will be planted to some programs especially free programs, .exe, .bat or other executable processes and unsafe links. The computer will get the virus infection when the PC users install, open or click on these infected files. Sometimes the virus can even attack the computer by the files on the USB stick as well. Most of the unsafe website and forum will contain the virus infection, the computer can be infected while visiting these webpages.

What Damage Will be Caused by the Virus:

Generally speaking, this virus can cause terrible virus infection on the infected computer like running slowly and even computer crashing. Once this virus has been installed to the computer, PC users will have to spend a long time opening programs or turning on the infected machine. It keeps taking over the high resource of the CPU and attacking the anti-virus program, other threats can be downloaded automatically from the unsafe website as well. What is worst, the cyber criminals have ability to remote control the infected PC due to this dangerous virus, all the information is in a high-risk of being stolen, the whole computer won’t be safe anymore.

Best Way to Handle With the Trojan Virus Completely?

The Trojan horse virus is an extremely dangerous threat on the infected computer. Registry and other system settings can be modified by it completely, that is the reason the nasty redirect virus can escape the tracking of the security tools like anti-virus program or firewall. It is strongly suggested that PC user should get rid of this Trojan horse virus in a manual way to remove it. Learn more from the manual removal guide below.

Step-by-Step Manual Removal Guide:

1. Press Ctrl+Shift+ESC keys together and stop virus process in the Windows Task Manager.

(The name of the virus process can be random)


2. Show hidden files and folders.
a. For XP: Press Win+E together, click on Tools, then choose Folder Options

For Vista, 7 and 8: Press Win+E together, click on Organize, then choose Folder and search options.
b. Click the View tab.
Under Advanced settings, click Show hidden files and folders, uncheck Hide protected operating system files (Recommended) and then click OK.

3. Open Registry entries. Find out the malicious files and entries of the virus and then delete all.

Attention: Always be sure to back up your PC before making any changes.

a. Press Win+R to get the Run window. In the “Open” field, type “regedit” and click the “OK” button.


regitry editor

b. All malicious files and registry entries that should be deleted:




HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\[RANDOM CHARACTERS].exe

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion

4. Reboot the computer normally to take effective, when the above steps are done.

This Video Shows You How to Safely Modify Windows Registry Editor:

As the above mentioned, PUP.Optional.NetLiker.A belongs to nasty PUP virus family, not only can it make the infected PC stay in a situation of being attacked by other viruses but also can damage the data on the infected computer. Cyber criminals can plant a backdoor process via the virus, which means they can monitor the infected PC once it turns on, the personal files, important details and other data can be viewed and copied by the cyber criminals. PC users had to remove the PUP virus without hesitating, or the infected PC will be in an unsafe situation.

If you have no idea how to do with that, please to contact experts from Yoocare Online Tech Support for further help.

Published by on December 20, 2013 7:42 am, last updated on December 20, 2013 7:43 am

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