My computer is in trouble with this PUP.Open Downloader Manager. I can’t get rid of it by myself. Every time I use my anti-virus program to remove it, but after I restart the computer to make sure the removal takes effect, this thing comes back. How can I remove this thing from my computer completely? I’m not a computer literate, please help!

Brief Introduction to This Trojan

PUP.Open Downloader Manager belongs to Trojan infection which can infect computer as a potentially unwanted program. This infection can be detected by anti-virus program in the infected computer, but it is a pesky Trojan which is not easy for the security tool to remove. As a potentially unwanted program, this infection can bundle itself to other software which can be found from the web, mainly, many free software contain different kinds of viruses or computer threats. Cyber hackers use those free programs to spread their malicious viruses to innocent computer and people. For some people who are computer newbie, their computers can be infected more easily if they barely take care about the Internet security.

Once this PUP.Open Downloader Manager enters a vulnerable computer, this infection can start its evil activities at once. The security level of the infected computer can be degraded as the anti-virus program can be automatically shut down and the firewall of the computer can be the lowest level or even be turned off. With such a circumstance, this Trojan can create a backdoor for other computer threats to come. Remote hackers can use those viruses and Trojans to take control of the infected computer. With the help of those evil threats, everything that PC user saves in the computer hard drive can be stolen by cyber criminals just like a piece of cake. Including financial information or other important files can be used by remote hackers for their own purposes.

With this PUP.Open Downloader Manager in computer, computer user will receive many pop-up ads once the computer is booted up. Browser settings can be modified without user’s consent. Also, many useless plug-ins can be added into the browser. When computer user tries to use the browser for something, user can be shown many redirects instead of the result he wants. Mostly, those redirects are sponsored links which cyber hackers can use them for pay-per-click revenue or increase the rank of those sites. PC user will also face problems like slow computer performance and the shortage of the hard drive. This Trojan infection can create many useless files in the computer which can slow down the speed of the computer. What’s worse, system-related files can be corrupted by this infection; computer will face unwanted error or sudden blue screen of death or restart randomly.

Some Traits about This Trojan

-Can slow down the performance of the computer, or even blue screen.
-Can create many junk files which occupy a lot of space in hard drive
-Can download other malicious programs into computer, which make further damage.
-Your sensitive information can be stolen by hacker who can access to your computer with the help of this adware.
-Cay give you many redirects all the time no matter what you are doing.
-May pretend as an anti-virus program and cheat you that computer is in dangerous, and ask you to pay to remove the threats.

NOTE: If you find any of these symptoms on your computer, that proves your PC is under attack and seriously infected. If you are not a computer savvy,Please contact YooSecurity Online PC Experts to remove this PUP.Open Downloader Manager for you.

Manual Removal Guide of Trojan (For Computer Literate)

There is a removal guide of Trojan provided here; however, expertise is required during the process of removal, please make sure you are capable to do it by yourself.

Step 1: Find Ctrl, Alt, and Delete these 3 keys and then press them together to open task manager to end the process related to this PUP, the name of the process of it is random.

XP task manager

Step 2: Try to find Folder Options in Control Panel, select the View tab, and then tick Show hidden files and folders and non-tick Hide protected operating system files (Recommended) and then click OK.


Step 3: Try to find the files which relate to this PUP, and delete them all.

Step 4: Click on Start button at the right lower corner, then click on Control Panel


Then you will come to the Control Panel windows, click on Add and Remove Programs


Then try to find the program which relates to this PUP, highlight it and choose Remove, the program’s name is random.


Step 5: Click on Start button or press Win+R, then type regedit in the box to open Registry Editor, after that, try to find
C:\Users\profile name here\AppData\

Similar video guide to modify Windows registry:


PUP.Open Downloader Manager is classified as a Trojan infection which can harm the computer deeply. Computer can be messed up and the anti-virus program cannot remove it totally as this infection can reproduce once the computer restarts. The privacy of PC user can be leaked out if the computer is connected to the web. Also, computer will face many other problems if this infection sticks in the computer. Computer can be slowed down and take a large time to launch programs. Computer will suffer from many sudden errors or even a complete crush if this infection cannot be removed as soon as possible.

Suggestion: To follow removal guide that mentioned above, a level of computer knowledge is needed. Still can’t get out of PUP.Open Downloader Manager? Contact online experts for help now!

Published by Tony Shepherd & last updated on February 3, 2014 11:15 am

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