What is PUP.Optional.ASK?
PUP.Optional.ASK virus hijacks web browser, blocks Internet access, corrupts files and program and destroy troubleshooting mode of your computer. This virus implants its malicious files into important system field like Windows folder, Host folder, startup items and so on. Once it corrupts system important areas, the system will receive many system failures, so sometimes computer cannot start normally but instead is blocked by some error codes. PUP.Optional.ASK virus hijacks the web browser and changes internet settings, redirects you to suspicious websites, and meanwhile installs malicious adware or other malicious extension to display endless popups. This virus even can change the DNS settings to blocks you access the Internet. Internet speed is very slow, and webpage cannot load up but a white blank screen or you will get prompt like “This webpage is not available” or “The data cannot be found” and so on. You even cannot download new programs into computer. This Trojan virus will gradually eat up system resource and slow down comp
uter performance.
PUP.Optional.ASK virus not only damages computer security but also threats to your personal safety. This virus spies on online history and record and send those important data to cyber criminals. Besides, it can help cyber criminals to control the computer and let them access your targeted computer. Once cyber criminals access your computer, they may get your information stored on your computer. So to keep your information safe, you should take some action to protect your computer from being infected with this PUP.Optional.ASK. Anyway you should install a reliable and effective antivirus to protect your computer. In case some malware is trying to get into your machine, the antivirus can block it soon. Then please don’t go to those unsafe websites where popups are here and there. Usually those websites are carried unknown malware or viruses, and some viruses can drop on computer soon you open the webpage. If you accidentally open suspicious sites, you should soon close it out. Besides, when you check email, please don’t open those sp
am email which can be attached with virus files. PUP.Optional.ASK virus must be avoided and eliminated if it is on your computer.
Video Guide: How To Remove Trojan virus?
Harms Cused by PUP.Optional.ASK
1.It can slow down your computer performance like it will take you more time to launch the normal program stored on your computer.
2.Operate on your computer backdoor to invite more malware to come to compromise your computer.
3.Monitor on your computer backdoor and may steal your personal information.
4.Unexplained system crash or blue screen.
If you have unfortunately infected by this malicious PUP.Optional.ASK virus, we have to deal with the program files, processes, dll files and registry entries, and it is suggested to update your antivirus or windows firewall frequently to avoid being infected by the similar infection. You are welcome to follow the removal guide listed below:
How to Remove PUP.Optional.ASK From Your PC?
PUP.Optional.ASK is a hazardous Trojan that will damage your computer system, violate your privacy and cause many other problems. Once it is detected on your computer, you have to remove it as soon as possible. You can follow the instructions below to get rid of this threat.
Method 1: Automatically Remove PUP.Optional.ASK by Using SpyHunter.
Method 2: Manually Remove PUP.Optional.ASK by Following the Steps Below.
Method 3: Use Windows System Restore.
METHOD 1: AUTOMATICALLY REMOVE PUP.Optional.ASK BY USING SPYHUNTER.
SpyHunter is a professional and powerful malware removal tool, which is able to detect and delete various kinds of threat from your computer without damage. It can deeply scan your whole system and remove all the detected threats automatically within just a few minutes. Please follow the steps below to install in on your PC and use it to remove the threat.
Step 1: Click the button below to download SpyHunter on your computer.
Step 2: Right click on the icon of SpyHunter and select “run” from the menu. Click on the run button if the system prompts a window asking whether you want to run the program or not.

Step 3: Tick I accept the license agreement and then click Next. Then SpyHunter will be installed on your computer automatically.
Step 4: Click Finish when you see the below window.
Step 5: After you finish the installation process, run the Spyhunter tool and click the “Malware Scan” button to perform a full scan of your computer to find out the threat.

Step 6: When the scan accomplishes, select all the detected malicious files and then click the Remove button on the right side to clean up all the detected threats. Reboot your computer to apply all changes.

METHOD 2: MANUALLY REMOVE PUP.Optional.ASK BY FOLLOWING THE STEPS BELOW.
The Trojan should be deleted from your PC as soon as detected. It can damage your computer terribly and violates your privacy if you don’t get rid of it promptly. Follow the manual removal instructions to remove it if you have certain skills of the computer. It is important to back up your computer before any file changes.
Step one: Terminate the processes of the Trojan in Windows Task Manager.
1) Right-click on the taskbar (or press CTRL+SHIFT+ESC keys) to open Windows Task Manager.
2) Click on the Processes tab, scroll down and find out its running processes of the Trojan, and then click on “End Process” button to terminate the selected processes.

Step two: Remove the registry entries of the Trojan from Registry Editor.
1) Press Windows + R keys and input regedit into the Run box, and then click OK to start Registry Editor.

2) When Registry Editor opens, search for and remove all the registry entries of the Trojan. Back up your registry in order to instantly restore your information if you operate mistakenly.

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\[RANDOM CHARACTERS].exe
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run ‘Random’
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings “CertificateRevocation” =Random
Step three: Delete show hidden files and folders of the Trojan.
1) Launch Control Panel from Start menu and click on Folder Options.

2) Under the View tab, check Show hidden files and folders and non-check Hide protected operation system files (Recommended). Then click on OK.

3) Delete all the files associated with the Trojan from your computer as follows:
%AllUsersProfile%\random.exe
%Temp%\random.exe
%AllUsersProfile%\Application Data\.dll
Step four: Please restart your computer normally to ensure all changes take effect as soon as you finish all the steps above.
Method 3: Use Windows System Restore.
if you have been infected by PUP.Optional.ASK you migt be required to restore yoru computer to a previous saved state. During an infection, PUP.Optional.ASK drops various files and registry entries. The threat intentionally hides system files by setting options in the registry and might install a rootkit. With these changes, the best solution is to return Windows to previous working state is through System Restore. Even if your standard AV has removed the infection it might be the safest aleternative. To verify if System Restore is active on your computer, please follow the instructions below to access this feature.
Windows XP, Windows Vista, and Windows 7
Go to Start Menu, then under ‘Run’ or ‘Search Program and Files’ field, type rstrui.
Then, press Enter on the keyboard to open System Restore Settings.
Windows 8 and Windows 10
Hover your mouse cursor to the lower left corner of the screen and wait for the Start icon to appear.
Right-click on the icon and select Run from the list. This will open a Run dialog box.
Type rstrui on the ‘Open’ field and click on OK to initiate the command.
Next,
1.Continue on the steps and choose a desired restore point. All saved restore points are listed with corresponding date, time and description. Please click and read ‘How do I choose a restore point?’ for additional guide. system-restore-7
Typically, only the most recent restore points are shown.

If prompted to Confirm your restore point, please click on Finish to begin the process.
Note, System Restore will not bring back lost personal files such as documents, images and videos. System Restore specific purpose is to bring back previous configuration and change the system state of Windows.
Video Show: Restoring your computer with Windows 7
Conclusion
PUP.Optional.ASK can expose your computer to kinds of threats by making use of the network vulnerabilities. For example, it will cause many unexpected problems including freezing up, file missing, executable programs disabled and etc. This Trojan is able to redirect your search result to some suspicious websites. This is why you may find that your default homepage and browser settings are just changed randomly. In fact it is created for allowing remote access to the infected computer by cyber criminals to collect privacy information for commercial use.
Warm Tips: If you are afraid of making mistakes and damaging your computer system during the manual removal process, you can use a powerful and professional removal tool. It not only can fully scan your system, but also can automatically remove PUP.Optional.ASK from your computer within a few clicks of mouse. Download the powerful removal tool and run it to clean up the malicious Trojan horse from your PC right now!