Unknown Trojan Removal Guide

Do you know what Unknown Trojan is?

Unknown Trojan is a new popup error message displayed by a Trojan. It is a simple popup message that may prompt users to click OK to download the rouge anti-spyware program that it advertises. Do not under any circumstances click OK to download this program.

Do you get this error message?

System Error!
Your computer was infected by unknown Trojan. It's dangerous for your system (critical files can be lost)!
Click OK to download the antispyware program to clean your system! (Recommended)

Variations of Unknown Trojan are Win32.Patched, Trojan.Win32, Win32.Qoologic, and Trojan.Win32.agent.akk

Aliases: Zlob.Trojan

In non-techie terms: Popup messages that state you have some type of Unknown Trojan or spyware infection are usually false. When a parasite is actually detected on your computer, in most cases, it will prompt you through an actual detection program and not from a generic "System Error notification".

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  • Kelly

    THANK YOU so much. I was freaking out I already had my hard drive ruined before with malicious software and I knew if I pressed ok to that odd "unknown trojan" pop up box message I was asking for trouble. I downloaded SmitFraudFix and it deleted the corrupted files successfully, I am so grateful. Thanks so much.

  • Mike

    Thanks! Norton didn't help me but this did. I don't know what I would have done without this fix!

  • Al

    Thank you so much this really works

  • Terry

    Many thanks for you help. I tried Symantec, Ad-Aware, AVG, Spybot, nothing worked. This was driving me nuts until I tried Smitfraudfix as described above.
    Again a most grateful Thanks!!

  • alvin

    i tried the auto removal but it still does not work :(

  • Michael

    I just downloaded the Smithfraudfix to my desktop...my AVG said the download was infected and NOT to open it.

    any suggestions.

    austin, tx

  • swemike

    I just downloaded the Smithfraudfix to my desktop…my AVG said the download was infected and NOT to open it.

    any suggestions.

    austin, tx

    Yeah, Don't use AVG. Smitfraudfix is built like trojan..this is the only way to find crap like this.

  • Paul

    AVG thinks it's a virus because it's a VB script that changes registry settings. That's what it's supposed to do, so it should be safe to run.

  • Sudhamsu

    oh! thank you! thank you! thank you! thank you! thank you! thank you! thank you! thank you! thank you! thank you! thank you! thank you! thank you! thank you! thank you! thank you! thank you! thank you! thank you! thank you! thank you!

    Thank you a lot! thank you a trillion timeS!!

    i was pulling my hair off to solve this prob!
    thanks again!

    my computer looks pretty clean now!

  • CD

    This software didnt work for me .... can someone tell me how to remove it plz.....

  • Mya

    i tried the auto removal but it still does not work :(



    Spyware files change all the time and probably SmitFraudFix didn't have that file in its update of spyware files. I suggest you try another free product and do a HijackThis log.

  • Russell Brooks

    Thank you, I used the automatic removal method and so far so good. None of the anti-spy programs I used were not effective. Now if I could just keep my teen age sons from going to questionable sites on the internet.

  • Dan


    Just wanted to say a big thank you to you. I searched hours around for softwares that really din help much and came across your site. Got it solved pretty quickly for my case. Fantastic stuff my fren

  • naruto

    Thanks a bunch. It really help me. Many thanks again.

  • Mike Liew

    Thank you so much. It really helps to remove the parasite. You make my day. Thank you once again.

  • Cloud Strife


    auto removal worked like a breeze for me.
    just about ready to give up and reformat the computer when i decided to check this site.
    saved me a lot of time from reformatting and other "after reformat" rituals.

    Again, my deepest thanks!!!

  • Grace

    Omg! It worked!!! Im about to lose my mind fixing this Unknown Trojan crap..hehe. Im so glad to see you article. Thank you!!!

  • thank u

    thank u so much i cant believed it worked u r the best and so is SmitFraudFix

  • Zero

    This works great. Just do the first part really, its just easier to do so, and less time consuming. But to run safe mode, just hit F8 repeatedly on the first part of the boot up, will have hardware information, or a logo of a company.

  • rod

    Thank you!!!!!!!!!

  • matt

    after a few miserable days i am not extremely happy. you provide a very valuable service. good luck in your endeavors. thank you very much for being smart and wonderful!!!!

  • Riné

    Thanks a lot!!! I am most impressed. Auto removal worked first time.

  • Jim

    I followed all the steps for automatic removal. But step 5: registry cleaning - do you want to clean the registry. that question never came up!! so when i was complete, and rebooted my computer, i still got the same trojan pop-up. please what can i do???

  • sweetie

    the pop up is still there.. i tried doing the auto and the manual removal but still the trojan is there.. guess i'd have to re install my OS.. sobs.. T_T

  • rizzzo

    I must have searched 100 sites and tried many different fixes. This one worked like a Charm! Highly recommended! You guys are the best!

  • yamaoka

    wow thanks i use automatic..it works..
    thanks a lot!!

    -japanese boy!!=P

  • K

    Guys, hours I've spent!! Norton/Avast//McAfee and another 20 programs.
    Not even one did any good and in 10 min with your software I was sorted.


  • Jessica

    Thank you Thank you so much! I just completed the auto removal after much frustration and............so far so good. No annoying pop ups.

    Thank you!

  • Bryann81

    Wow! this is simple and easy way to get rid of all the troubles. I have done many spyware & malware cleaning, but this is the most amazing software. Two thumbs up!

  • Paul (Brisbane)

    Great. I tried all sorts of different Anti-Trojan software, but the "Unknown Trojan" pop-up kept popping up. But I went through your Steps 1-10, and it's no longer there. I couldn't find Step 11 though, the "Local Settings\Temp" didn't seem to be anywhere in my C;\Documents and Settings\[LISTED USER], so I hope I haven't left anything lurking somewhere. But so far all seems good. Thanks!

  • Jennifer

    Thank you worked perfectly just followed the directions as listed. Beware what you open on your computer. Mine was an innocent site and still left me with Porn inspired searches. What I was viewing had nothing to do with Porn. Thanks again, I had used ad aware, avg, and windows defender and nothing detected it. Thanks!

  • http://spyware kassali

    Thanks you ... finally my problem is fixed by your s/w.

  • Aimee

    I am so happy I found this site...I was about to pay geeksquad $199.00 for this dumb unknown trogan...I followed your instructions and have rid the nasty bug and still $199 richer thank YOU!!! It was quite easy!

  • Brad

    This is the first time I've had to do anything like this, and it worked a treat. Thank-you!!

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