Best Way to Remove PUP.Optional.InstallCore.A – PUP.Optional Virus Removal Guide

What is PUP.Optional.InstallCore.A?

PUP.Optional.InstallCore.A is a new version of the awful PUP.Optional virus. Updated from its older versions like  PUP.Optional.InstallBrain, PUP.Optional.OpenCandy,  PUP.Optional.BrowserProtect.A, PUP.Optional.Wajam.A, Pup.optional.babylon.a, PUP.Optional.Conduit.A and PUP.Optional.Sweetpacks.A, this new PUP.Optional virus is equipped with stronger ability of spreading malicious codes and resisting antivirus removal.


As soon as PUP.Optional.InstallCore.A invading your PC, it inserts codes on your system’ crucial sections like Registry and MBR with random name and location, making itself to bypass antivirus detection and firewall monitoring. Later on, PUP.Optional.InstallCore.A virus connects remote server to download and activate various malware and hijackers such as browser defender  and .

In short, PUP.Optional.InstallCore.A will trigger severe problems to your PC and degrade your system performance seriously. To avoid these terrible problems, please follow the detailed steps below to get rid of PUP.Optional.InstallCore.A viruses.

(Note:If you are not a computer expert, it will be very risky to complete the PUP.Optional.InstallCore.A manual removal process. You have to assure that you are equipped with expert-level knowledge and skills on PC before you do anything on the infected system. If you are not experienced enough on manually removing a virus, please get Professional PC Support to help you🙂

Where did PUP.Optional.InstallCore.A come from?

In most instances, PUP.Optional.InstallCore.A spread via other viruses hiding in a vulnerable computer. Besides, some online sources such as free software downloading websites and porn websites are the second spreading way. Meanwhile, spam email will give a route for the PUP.Optional.InstallCore.A virus to invade your system.

Get Rid of PUP.Optional.InstallCore.A step by step now

STEP1:Backup your importance files with your USB flash drive or external hard drive before you deleting anything.

Step2: Stop PUP.Optional.InstallCore.A processes in the Windows Task Manager by Pressing Ctrl+Alt+Del keys together



Step3: Erase PUP.Optional.InstallCore.A Virus associated files

%AppData%[trojan name]toolbarstats.dat
%AppData%[trojan name]toolbaruninstallIE.dat
%AppData%Protector-[random 3 characters].exe
%AppData%Protector-[random 4 characters].exe

Step4: Terminate these Registry Entries created by PUP.Optional.InstallCore.A.

 HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Options[random].exe
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun "random "


PUP.Optional.InstallCore.A virus is stubborn virus could not be removed by any antivirus programs, it require professional skills to remove all the PUP.Optional.InstallCore.A related files manually. If you do not remove it early, your PC will have to suffer more severe issues like system crash or screen lockup. You should take action now to get rid of PUP.Optional.InstallCore.A before everything get worse.
Attention: If you have no enough skills and experience on handling a virus manually, please never try to complete the manual removal steps by yourself. Get Online PC Expert to help you:
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