Thursday, 1 June 2017

Uninstall Sirefef trojan from Firefox- how to clean your computer of viruses

Tips For Removing Sirefef trojan from Windows XP

Error caused by Sirefef trojan 0x80242FFF WU_E_UH_UNEXPECTED An update handler error not covered by another WU_E_UH_* code. , 0x80240026 WU_E_INVALID_UPDATE_TYPE The type of update is invalid., 0x80244025 WU_E_PT_FILE_LOCATIONS_CHANGED Operation failed due to a changed file location; refresh internal state and resend., 0x0000006B, 0x80246007 WU_E_DM_NOTDOWNLOADED The update has not been downloaded., 0x8024A003 WU_E_AU_LEGACYCLIENTDISABLED The old version of the Automatic Updates client was disabled., 0x80242017 WU_E_UH_NEW_SERVICING_STACK_REQUIRED The OS servicing stack must be updated before this update is downloaded or installed., 0x80240033 WU_E_EULA_UNAVAILABLE License terms could not be downloaded., 0x00000113, 0xf0804CBS_E_OPEN_FAILED the update could not be found or could not be opened, 0x80244004 WU_E_PT_SOAPCLIENT_CONNECT Same as SOAPCLIENT_CONNECT_ERROR - SOAP client failed to connect to the server., 0xC000021A, 0x80244024 WU_E_PT_HTTP_STATUS_VERSION_NOT_SUP Same as HTTP status 505 - the server does not support the HTTP protocol version used for the request., 0x000000A1

Delete Sirefef trojan : Step By Step Uninstallation Guide

Detailed Information About Sirefef trojan

Sirefef trojan has been considered as one of the most dangerous PC threat. It usually infect all famous browser by attaching add-ons, plug-ins and other suspicious code. By modifying browser setting and attacking your browser, it will lead you to the third-party site and start to cause interruption while surfing the web. It secretly gets installed into the PC without asking for their approval and cause lots of serious troubles for them. The primary goal of its developers is to boost web traffic, promote sponsored products or services and earn online revenues.

After getting installed into your PC, Sirefef trojan will brings lots of serious problems to you. Some of them are listed below :
  • Encrypts your files, makes them inaccessible and ask to pay ransom fee.
  • Highly consumes System resources and degrades overall performance speed.
  • Alters entire browser as well as System settings.
  • Opens the System backdoor and allow hackers to access PC remotely.
  • Collects victims all sensitive data and send them to the scammers and much more.



Manual Solutions To Delete Sirefef trojan


Method 1 : Quick Steps To Start PC in Safe Mode with Networking To Delete Sirefef trojan

For Windows 7

  • First of all, close all open tab or application and restart your PC.
  • Tap F8 key repeatedly on your keyboard until your desktop screen is presented with "Advanced Boot Options" screen.
  • To select the "Safe Mode with Networking", use arrow keys and press the Enter button on your keyboard.

For Windows 8

  • Go to the Start screen>type Advanced Startup>Click on Settings.
  • The Settings screen will appear on your screen, scroll down and click on the Restart button under the category of "Advanced Startup".
  • Select Troubleshoot option.
  • Move your cursor and press on the Advanced options.
  • Go to Startup Settings option and click on the Restart button. By following these procedure, your PC will restart again.
  • On the Startup Settings option, press 5 key to enable "Safe with Networking" option.

Windows 10

  • Restart your Computer. Hold the Shift key down when you select Power > Restart.
  • Go to Troubleshoot>Advanced options>Startup Setting>Restart.
  • You will see the list of options on your screen. Press 5 key on your keyboard to enable the PC in Safe Mode with Networking.

Method 2 : Locate and Delete All Registry Files Created By Sirefef trojan

  • Press "Windows+R" keys together to call out the Run window. 
  • Type "regedit" and hit on the Enter key.
  • Find out Sirefef trojan related entries and delete them.

Note : If you are unable to locate manually then check these files because Sirefef trojan keeps changing its files with path and name.
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]

Method 3 : Delete Sirefef trojan related all malicious processes from Windows Task Manger

  • Press "Ctrl + Shift + Esc" keys together to enter the Task Manager.
  • Get over the Processes Tab.
  • Find out Sirefef trojan or related process, right click on it and click on the "End Process" button.

Method 4 : Quick Steps To Unhide All Hidden Files And Folders to Delete Sirefef trojan

On Windows XP/Vista/7

  • Open My Computer by double clicking on its icon.
  • Go to Tools menu>Folder options > View tab.
  • Under the Hidden files and folders section, mark on the "Show hidden files and  folders option".
  • Press on Apply button and at last click on OK button.

On Windows 8

  • Go to Start logo and choose Control Panel.
  • Go to setting option>Select "Appearance and Personalization" tab.
  • Tick mark on the "Show hidden files and folders" and click on apply and OK button.

On Windows 10

  • First of all, open the folder which you want to reveal files.
  • Go to View tab from the menu bar.
  • Activate the Radio Button which is associated with "Show hidden files and folder" created by Sirefef trojan.
  • Press Apply and then OK button.

Method 5 : Delete Sirefef trojan or associated files from Control Panel

From Windows XP/Vista/7

  • Go to Start and choose Control Panel option.
  • Click on the Uninstall a Program option under the Programs and features.
  • Find out Sirefef trojan or related files and Click on the Delete button.

From Windows 8/10

  • Right click on the bottom left corner of System and select Control Panel option.
  • Go to the Programs category and click on the Uninstall a Program option.
  • Locate Sirefef trojan and related suspicious program and press on the Delete button.

Method 6 : Delete Sirefef trojan From Different Web Browsers

From Chrome 54.0.2840

  • Open your Chrome 54.0.2840. Go to the three stripes icon which is located at the top right corner.
  • Go to Tools > Select Extensions.
  • Find out Sirefef trojan or related extensions and click on the Trash icon.

From Internet Explorer 8-8.00.6001.18241

  • First of all, open your Internet Explorer 8-8.00.6001.18241 browser. Go to Tools and select Manage Add-ons option.
  • Find out Sirefef trojan related extensions and click on the Disable or Delete button.

From Mozilla:38.2.1

  • Launch Mozilla:38.2.1. 
  • Go to Tools > Add-ons > Extensions.
  • Select Sirefef trojan related extensions from the appearing list and click on Remove button.

From Edge

Microsoft Edge browser does not carry out any extensions. If you are Microsoft Edge user and want to delete Sirefef trojan from your browser then you can skip this method and opt another alternative removal procedure.

Method 7 : Turn On Safe Browsing Features To Protect PC Against Sirefef trojan

On Chrome 54.0.2840

  • Open your Chrome 54.0.2840 > type chrome://settings/ in the address bar and hit Enter button on your keyboard.
  • On the Settings page, select "Show advanced settings" option.
  • Find out Privacy section and mark on the "Protect you and your device from dangerous sites" option.
  • At last, restart your browser.

On Internet Explorer 8-8.00.6001.18241

  • First of all, open your Internet Explorer 8-8.00.6001.18241. 
  • Go to Tools menu.
  • Choose SmartScreen Filter option from the drop down list and then select "Turn on SmartScreen Filter..." option.
  • Now, restart your IE browser.

On Mozilla:38.2.1

  • Launch Mozilla:38.2.1.
  • Select Open Menu > choose "Options" from the drop down lost.
  • Go to Security and put the check-mark on all three option which appear under the "General" including Warn me when sites try to install add-ons, Block reported attack sites and Block reported web forgeries

On Edge

  • Open Microsoft Edge browser.
  • Go to More Actions > Settings > Advanced Settings > View Advanced Settings.
  • Scroll down to turn ON " help protect my PC from malicious sites and downloads with SmartScreen Filter".

Scan and Delete Sirefef trojan

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