Fix the Problem of "avast! Web Shield has blocked a harmful webpage or file"

Recently, a lot of computer users complain that they keep getting the pop-up alerts from avast antivirus programs. For example:

Upon clicking on the error messages, I was led to an Avast webpage with these details:

URL
hxxp://tsangakha.com/b/opt/288245620E5353051415B64D
Infection
URL:Mal

and
URL
hxxp://bnswhat.su/b/opt/4C61600C102BA7500A6D4218
Infection
URL:Mal

There are many other popups from "Avast Web Shield has blocked a harmful webpage or file" alert, such as
htp://filesonlinehere.com/sync/?rmbs=... 
htp://allgoodtoolkitbest1.info/sync/?q=...
htp://morefilesnow.co.il/sync/?q=C6qu...
htp://bestaddon.co.il/sync/?q=C6qUojs...
htp://getfilenow.co.il/sync/?rmbs=1g=C...
htp://apps-infor.info/sync/?rmbs=1g=C...

Fortunately, the antivirus blocks those malicious sites from opening. But how can these pop up appear on the computer browser? What causes this problem? How to permanently get rid of those malicious popups. In this post, there will be the illustration and the tips to remove the harmful webpage.

Description of harmful webpage 

Usually harmful webpage is caused by potentially unwanted program (PUP) or potentially unwanted application (PUA). Those PUP or PUA can get into your computer along with some unsafe free software that you can download from the internet, such as the fake Java update, Adobe Flash Player distributed from entrusted sources. It can also get into the computer after you click on some malicious links or hacked websites. If you don't pay attention to the programs you install or the items you click on, you will get the malware on your computer without your awareness.

The harmful webpage is capable to change the browser setting on the browsers like Mozilla Firefox, Google Chrome, or Internet Explorer. They can also replace the default homepage and new tab.  When you surf the Internet, harmful webpage will hijack your browser and redirect you to its own domain. Those are topically created by the cyber criminals to make profits by generating web traffics.

Apart from the annoying pop up and redirection, it also bring the below trouble:

It will display excessive targeted advertisements and commercials.
It changes the browser settings and hijack browser's homepage and new tab.
It will add unnecessary extension or add-on and toolbar installation.
It will silently track the browsing behavior of the user for marketing.
It will collect confidential user information and dispatches them to cyber criminals.

It is suggested to keep a powerful anti-virus like Spyhunter on the computer to scan your computer for malware and remove / block viruses.

Solutions to remove Harmful webpage  

In this post, there will be two solutions to remove Harmful webpage :

1. Remove Harmful webpage manually.

2. Remove Harmful webpage by using SpyHunter anti-malware.

Instructions to Get Rid of Harmful webpage

Method 1: Harmful webpage  Manual Deletion

Step 1: Open Windows Task Manager and close all running processes.
( Methods to open Task Manager: Press CTRL+ALT+DEL or CTRL+SHIFT+ESC or Press the Start button->click on the Run option->Type in taskmgr and press OK.)

Step 2: Reset your browser setting

Firefox:

In the drop-down list of Firefox, go to Help and click on Troubleshooting Information.

Click on the Reset Firefox button to reset it.

Google Chrome: 

Click on the Chrome menu on the right of toolbar and then select Settings.

Scroll down to the bottom to click Show advanced settings.

Go down to the bottom and click Reset browser settings to reset Google Chrome to its default setting.

IE: 

Click Tools on the up right corner and select Internet Options.

Click on Advanced tab, press Reset button to reset IE to its default settings.

Step 3: Remove files of Harmful webpage   like the pictures showed:

Step 4: Go to the Registry Editor and remove all the infection registry entries listed here:

(Steps: Hit Win+R keys and then type regedit in Run box to search)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main "Start Page" = "http://www.<random>.com/?type=hp&ts=<timestamp>&from=tugs&uid=<hard drive id>"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Search "CustomizeSearch" = "http://www.<random>.com/web/?type=ds&ts=<timestamp>&from=tugs&uid=<hard drive id>&q={searchTerms}"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Search "SearchAssistant" = "http://www.<random>.com/web/?type=ds&ts=<timestamp>&from=tugs&uid=<hard drive id>&q={searchTerms}"

Step 5: All the infection associated files listed below need to be removed:

%CommonAppData%\<random>.exe
C:\Windows\Temp\<random>.exe
%temp%\<random>.exe
C:\Program Files\<random>

Method  2: Automatic Removal with SpyHunter

SpyHunter is a world-famous real-time malware protection and removal tool, which is designed to detect , remove and protect your PC from the latest malware attacks, such as Trojans, worms, rootkits, rogue viruses, browser hijacker, ransomware, adware, key-loggers, and so forth. To keep SpyHunter Anti-malware on your computer is an important way to protect your computer in a good condition. Please find the instruction as follow. 

Step 1: Press the following button to download SpyHunter.

Step 2: Save it into your computer and click on the Run choice to install it step by step.

Step 3: Click Finish then you can use it to scan your computer to find out potential threats by pressing Scan computer now!

Step 4: Tick Select all and then Remove to delete all threats.

 Guide to download RegCure Pro to optimize PC 

If you are still worried about the left over of the malware and want to clean all the unwanted registry entries,  it is recommended to use RegCure Pro.

Step 1. Install and launch RegCure Pro on your PC.

Step 2.  Select "Yes" to download and install RegCure Pro.

 

Step 3. Click "Next" to continue.

Step 4. RegCure Pro will open automatically on your screen.

 Step 5. RegCure Pro is scanning your PC for error.

 

Step 6. After scanning, choose the issues you want to fix. 

 

Note: Manual removal harmful webpage refers to key parts of computer system. Any error step may lead to system crash. If you don’t have sufficient expertise in dealing with the manual removal. Install Spyhunter can be your better choice, because it is capable of auto-detecting and removing viruses. You can also Download RegCure Pro to help you clean up unwanted registry entries and files so as to optimize the computer.

<<Scan your computer with SpyHunter anti-malware for free.