i have a windows 7 64bit laptop with microsoft security essentials installed on it. For the past couple days, it seems to detect Trojan:Win32/Colisi.F every now and again. i clicking delete it but it keeps coming back. is there a way to get rid of it safely? Im starting to get a little bit worried!. What can I do to delete the virus??

windows security essentials finds threat Trojan:Win32/Colisi.F, but after removal, the infection immediately re-occurs. I tried other antivirus but did not find the virus, but MSE keeps detecting it. what further steps can get rid of Trojan:Win32/Colisi.F completely?

What is Trojan:Win32/Colisi.F？

Trojan:Win32/Colisi.F is Trojan virus which can be deemed as Adware and PUP downloader. While being infected by Trojan:Win32/Colisi.F, it means that there is a PC viruses source embedding on your PC and it will keep downloading more threats to cause corruptions. It is mainly connected with Adware or Potentially Unwanted Programs, but it also assists spyware, key-logger, backdoor trojan and rogueware attack your system as well. Trojan:Win32/Colisi.F installs ad-supported extension on your IE, Chrome or Firefox to keep generating coupons, discounts, best deals or other ads to lure you to click, once you click those ads you will be redirected to third party websites related with scam.

The worst circumstance caused by Trojan:Win32/Colisi.F is the risk of leaking your privacy. Trojan:Win32/Colisi.F is connected with remote malware server owned by cyber criminal, who will use spyware to track your operations and collect your information such as IP address, ISP, Email, Phone number, and even credit card details. After stealing your information, these scammers will try everything they can to hack your account to steal your money or design scam to make you pay money. To protect your PC and privacy, you need to get rid of Trojan:Win32/Colisi.F virus as quickly as possible. The removal guide blow can assist you to remove Trojan:Win32/Colisi.F virus completely, continue reading to fix your PC now:

Steps for Removing Trojan:Win32/Colisi.F Virus

Trojan:Win32/Colisi.F Manual Steps (Experienced and skilled computer users can use this advanced Manual Removal method )

Step One. End malicious process related with Trojan:Win32/Colisi.F

Step Two. Remove unwanted plug-in related with Trojan:Win32/Colisi.F from Chrome, Firefox, IE and Microsoft Edge browser.

Step Three. Uninstall all Potentially Unwanted Programs related with Trojan:Win32/Colisi.F

Step Four. Find and delete all harmful registry files generated by Trojan:Win32/Colisi.F

Trojan:Win32/Colisi.F Automatic Steps (Good and easy for most of PC users to delete Trojan:Win32/Colisi.F )

Step One. Install SpyHunter to remove Trojan:Win32/Colisi.F virus and other hidden threats.

Step Two. Install RegHunter to fix all damaged registry files and make up the security exploits.

(Optional Step). Clean up all malicious codes and cookies of Trojan:Win32/Colisi.F from Chrome, Firefox, IE and Microsoft Edge.

Manual Steps (Experienced and skilled computer users can use this advanced Manual Removal method )

Step One. End malicious process related with Trojan:Win32/Colisi.F.

1. Open Windows Task Manager by pressing Ctrl + Shift + Esc keys together:

2. Find out the process related with Trojan:Win32/Colisi.F and click End Process:

Step Two. Remove unwanted plug-in related with Trojan:Win32/Colisi.F from Chrome, Firefox, IE and Microsoft Edge browser.

On Chrome

1. Click the Chrome menu on the browser toolbar.
2. Click Tools.
3. Select Extensions.
4. Click the trash can icon to delete Trojan:Win32/Colisi.F extension.
5. Make sure to remove all extensions you do not know or need.
6. A confirmation dialog appears, click Remove.

On Firefox

1. Click the menu button and choose Add-ons. The Add-ons Manager tab will open.
2. In the Add-ons Manager tab, select the Extensions panel.
3. Make sure to remove all extensions you do not know or need.
4. Click Disable or Remove button of Trojan:Win32/Colisi.F.
5. Click Restart now if it pops up.

On Internet Explorer

1. Open the IE, click the Tools button , and then click Manage add-ons.
2. Click Toolbars and Extensions on left side of the window., and then select Trojan:Win32/Colisi.F
3. Make sure to remove all BHO’s you do not know or need.
4. If the add-on can be deleted, you’ll see the Remove option. Click Remove and then click Close. Otherwise click Disable button.

On Microsoft Edge
(Microsoft Edge browser still does not have extensions settings. Now we only need to reset search engine and homepage to keep web browser hijacker away from the browser)

1. Reset your default search engine to remove search engine hijacker virus.

Select More (…) on the address bar, then Settings:

Click View advanced settings:

Click <Add new> under “Search in the address bar with”, then input the search engine you like:

Now select the search engine you like and click Add as default:

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2. Reset your homepage page on Microsoft Edge to remove homepage redirect virus.

Select More (…) on the address bar, then Settings:

Under Open with, select A specific page or pages:

select Custom to enter the URL of page you want to set as homepage:

Step Three. Uninstall all Potentially Unwanted Programs related with Trojan:Win32/Colisi.F

1. Open Control Panel window.

Win 10 user – Right-click on the Windows Start button and choose “Control Panel” from the pop-up menu.

Win 8 user – Open the Settings Charm Bar by pressing Windows key + I key on your keyboard at the same time, then click on the Control Panel option

Win 7 / Vista / XP user – Click on the Start button to open your Start Menu, then Click Control Panel

2. In Control Panel, click on Uninstall a program under the Programs category

3. In the Programs and Features window, click Installed On to display the latest programs, scroll through the list to seek and uninstall Trojan:Win32/Colisi.F and other unwanted and unfamiliar programs that look suspicious.

Step Four. Find and delete all harmful registry files generated by Trojan:Win32/Colisi.F

1. Call out the Run window by pressing Windows + R keys together, and then type regedit and hit Enter key :

2. Find out and remove all harmful registry files related with Trojan:Win32/Colisi.F virus listed below:

(You may not be able to find out all files listed below as the virus keeps changing its files with name and path.)

HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisallowRun

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Tracing\Muvic_RASAPI32

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Tracing\Muvic_RASMANCS

HKEY_CURRENT_USERSoftwareMicrosoftInternet ExplorerMain “Default_Page_URL”

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\[adware name]

Automatic Steps (Good and easy for most of PC users to delete Trojan:Win32/Colisi.F )

Step One. Install SpyHunter to remove Trojan:Win32/Colisi.F virus and other hidden threats.

1. Click the blue button below to open of SpyHunter.

(Notes – SpyHunter’s free version can only help you detect malware or virus. If you want to remove the malware threats detected by SpyHunter, you will need to buy license of SpyHunter. If you do not need it any more, please follow instructions on SpyHunter uninstall)

2. On the page, please click Download Free Scanner to download SpyHunter safely and quickly.

Tips: After SpyHunter is downloaded, your Chrome /Firefox /IE may display such fake security warning ” This type of file can harm your computer. Do you want to keep Download_Spyhunter-Installer.exe anyway?”, which is generated by virus to cheat you, please just ignore the fake warning and click “Keep” button.

3. Once downloaded, please double-click SpyHunter-Installer.exe to start the installation of SpyHunter.

4. When SpyHunter is installed, it will be run automatically, then click Scan Computer Now to detect Trojan:Win32/Colisi.F related threats:

5. Once SpyHunter completes the scan, please click Fix Threats to get rid of Trojan:Win32/Colisi.F.

Step Two. Install RegHunter to fix all damaged registry files and make up the security exploits.

1. Click the green button below to open of RegHunter:

(Notes – RegHunter’s free version can only help you scan Registry errors or system errors. If you want to fix the errors detected by RegHunter, you will need to buy license of RegHunter. If you do not need it any more, please follow instructions on RegHunter uninstall)

2. On the page, please click Free PC Diagnosis to download RegHunter safely and quickly.

Tips: After RegHunter is downloaded, your Chrome /Firefox /IE may display such fake security warning “This type of file can harm your computer. Do you want to keep Download_Reghunter-Installer.exe anyway?”, which is generated by virus to cheat you, please just ignore the fake warning and click “Keep” button.

3. Once downloaded, then double-click RegHunter-Installer.exe to start the installation of RegHunter.

4. When RegHunter is installed, it will be run automatically, then click Scan for Registry Errors Now! to detect files corrupted by Trojan:Win32/Colisi.F:

5. Once RegHunter completes the scan, please click Repair All Errors to solve security bugs related with Trojan:Win32/Colisi.F.

(Optional Step). Clean up all malicious codes and cookies of Trojan:Win32/Colisi.F from Chrome, Firefox, IE and Microsoft Edge.

– Clean up cache and cookies by resetting Chrome

1. Open Chrome, then click “Customize and control Google Chrome” button, and then click on Settings

2. Under the Chrome Settings page, scroll down to the bottom, then click on Show advanced settings button

3. After clicking on Show advanced settings button, scroll down to the bottom and click on Reset browser settings button

4. A message box will pop up to inform that your browser settings will be restored to their original defaults, click Reset button when it appears:

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– – Clean up cache and cookies by resetting Firefox

1. Open Firefox, then click on Firefox button, then Click on Help button, then Click on Troubleshooting Information

2. At the Troubleshooting Information page, click on Reset Firefox

3. A message box will pop up to let you confirm that you want to reset Firefox to its initial state, click Reset Firefox button when it appears:

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– – Clean up cache and cookies by resetting IE

1. Open Internet Explorer, then click on Tools, then click on Internet Options

2. On the Internet Options window: click on Advanced tab, then click Reset button

3. A message box will pop up to let you confirm that you want to reset all Internet Explorer Settings, click Reset button when it appears:

4. When the resetting process is done, you’ll see this message box, click Close

5. You’ll need to restart your Internet Explorer to complete the resetting process.

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– Clean up cache and cookies on Microsoft Edge
1. Select More (…) on the address bar, then Settings:

2. click “Choose what to clear”:

3. Check the first three options and then click Clear:

If you have done each step above accurately, you can get rid of Trojan:Win32/Colisi.F virus completely. Hope you can solve the issue and get your healthy computer back. Good luck 🙂