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Remove Js/Adrozek.A virus (Virus Removal Instructions) - Free Guide

removal by Linas Kiguolis - - | Type: Browser Hijackers

Js/Adrozek.A virus is a detection name for a browser hijacker, although might be related to a false positive on Opera

Js/Adrozek.A malwareJs/Adrozek.A is a heuristic detection that might either indicate a false-positive or a serious computer infection

Js/Adrozek.A virus is a relatively old detection name used by Windows Defender to identify suspicious activity on various web browsers. In most cases, such potentially unwanted programs are distributed via deceptive methods such as software bundling or fake update prompts – this usually results in unintentional installation. However, this threat is related to JavaScript malware, which typically infiltrates machines automatically. If anti-malware software is installed, it will block the threat and flag it as Js/Adrozek.A or BrowserModifier:JS/Adrozek.A.

While the heuristic detection Js/Adrozek.A is not new; there have been multiple reports about its increased activity. Users from Germany, Poland, and other countries reported that the popups were frequent as soon as the Opera web browser was used. Even though the detection should be investigated, it is highly likely that the increased activity is caused by an update of either Microsoft Defender definitions or the Opera web browser.

Name Js/Adrozek.A, BrowserModifier:JS/Adrozek.A, Trojan:Win32/Adrozek!rfn
Type Browser hijacker, potentially unwanted program 
Related browsers  Opera 
Symptoms  Symptoms may vary, but common ones include changed homepage URL, modified search engine, 
Risks  Installation of other potentially unwanted programs or malware, data theft, monetary losses 
Removal  The easiest way to delete unwanted applications is by scanning the machine with anti-malware software, although the process can also be done manually as per instructions below 
Further steps If the detection is not a false-positive, the threat should be eliminated immediately, and all the browsers reset (we provide the instructions below). In case you suffer from system stability issues after the infection is terminated, we recommend fixing virus damage with Reimage Reimage Cleaner Intego

While Js/Adrozek.A virus is commonly used for describing browser hijacking actions; the detection name also indicates that the infection is related to JS, otherwise known as JavaScript. JavaScript is a programming language that is widely used on various web pages to make them interactive.

Nonetheless, the JavaScript is also commonly used to launch malicious attacks, which could result in malware infiltration, and, under certain circumstances, can occur without any user interaction whatsoever. To mitigate such attacks, it is important to ensure that all the software is updated, including the operating system, as the drive-by download[1] would fail if no software vulnerabilities are found during it.

If the detection is not a false-positive, it is much more dangerous than a regular browser hijacker due to this, as it can establish persistence mechanisms, change the Windows registry, and perform other actions that would prevent an easy Js/Adrozek.A removal. If your anti-virus software is incapable of deleting the found threat, we highly advise you to try using an alternative solution, such as SpyHunter 5Combo Cleaner or Malwarebytes.

Nonetheless, it is also important to note that Js/Adrozek.A virus detection can also be a false positive. These instances are relatively common (other common heuristic detections suffering from the same problem include Win32/Lodi, Js/Adware.Agent.AW, HTML:RedirME-inf, and many others) and often happen with when a particular program, in this instance, Opera, gets updated, and security application flags it mistakenly.

One of the main reasons why Js/Adrozek.A might be a false positive is when many users report the same activity on the same platform. Despite this, each of the heuristic detections should be carefully investigated to ensure that it is not indeed a false positive. For that, perform the following steps:

  • Update security software and the related program, e.g., Opera
  • Scan your computer with another anti-malware
  • Remove Js/Adrozek.A virus if other security programs detect it as well.

Finally, after the infection is eliminated, you should also take additional steps to clean up your browsers and the computer: reset the installed web browsers as per instructions below and then perform additional checks with a repair tool such as Reimage Reimage Cleaner Intego.

In case repeated scans with other anti-malware show that the detection is indeed a false positive, you should add the location/file to the exclusions list.

Js/Adrozek.A virusJs/Adrozek.A is malware that can intercept your browser traffic and perform other malicious activities on your PC

Do not ignore anti-malware software warnings

Security software is one of the essential components of any modern computer – industry experts[2] advise keeping a robust anti-malware running at all times. Unfortunately, there are plenty of people who ignore this advice and believe that they are smarter than malware – this couldn't be further from the truth, as modern computer threats are programmed in a way to operate without any trace whatsoever.

Additionally, many users visit high-risk torrent sites and download pirated programs or software cracks, which are almost always detected by anti-malware. Delete such files straight away, as cracks/keygens are the main distribution method for devastating infections such as Geno ransomware, which would encrypt all the files on your system and then demand ransom for their return.

Thus, if you are downloading new software, browsing the web, or are facing with a suspicious ad asking you to download an unknown program, always pay attention to your security software, as definitions are updated regularly, and there are plenty of invisible threats around that you would never notice without it.

Handle Js/Adrozek.A virus detection correctly

False positives can be pretty hard to understand for regular computer consumers, and they can often be very damaging overall. This is why independent testing labs always take into account a number of false-positives when ranking anti-malware software. While Windows Defender has been doing much better in this regard from a few years ago,[3] false detections are still possible. So, you should not rush Js/Adrozek.A virus removal immediately.

To determine whether it is indeed a false positive, you should keep in mind several factors, for example, what were you doing during the time of the pop-up; if you were about to download software crack, you for sure remove Js/Adrozek.A without thinking twice. However, if the detection is repeated at certain time periods and occurs when you are performing regular activities (for example, watching YouTube videos) or accessing a legitimate program (Opera), you should consider putting it as an exclusion via the security software settings. 

You may remove virus damage with a help of Reimage Reimage Cleaner Intego. SpyHunter 5Combo Cleaner and Malwarebytes are recommended to detect potentially unwanted programs and viruses with all their files and registry entries that are related to them.

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Reimage Happiness
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Compatible with Microsoft Windows Supported versions Compatible with OS X Supported versions
What to do if failed?
If you failed to remove virus damage using Reimage Intego, submit a question to our support team and provide as much details as possible.
Reimage Intego has a free limited scanner. Reimage Intego offers more through scan when you purchase its full version. When free scanner detects issues, you can fix them using free manual repairs or you can decide to purchase the full version in order to fix them automatically.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Reimage, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Intego, try running Combo Cleaner.

To remove Js/Adrozek.A virus, follow these steps:

Get rid of Js/Adrozek.A from Windows systems

To uninstall potentially unwanted programs from Windows, follow these steps:

  1. Click Start Control Panel Programs and Features (if you are Windows XP user, click on Add/Remove Programs). Click 'Start -> Control Panel -> Programs and Features' (if you are 'Windows XP' user, click on 'Add/Remove Programs').
  2. If you are Windows 10 / Windows 8 user, then right-click in the lower left corner of the screen. Once Quick Access Menu shows up, select Control Panel and Uninstall a Program. If you are 'Windows 10 / Windows 8' user, then right-click in the lower left corner of the screen. Once 'Quick Access Menu' shows up, select 'Control Panel' and 'Uninstall a Program'.
  3. Uninstall Js/Adrozek.A and related programs
    Here, look for Js/Adrozek.A or any other recently installed suspicious programs.
  4. Uninstall them and click OK to save these changes. Right click on each of suspicious entries and select 'Uninstall'
  5. Remove Js/Adrozek.A from Windows shortcuts
    Right click on the shortcut of Mozilla Firefox and select Properties. Right click on browsers' icon and select 'Properties'
  6. Go to Shortcut tab and look at the Target field. Delete malicious URL that is related to your virus. Select 'Shortcut' tab and delete '' or other suspicious URL

Repeat steps that are given above with all browsers' shortcuts, including Internet Explorer and Google Chrome. Make sure you check all locations of these shortcuts, including Desktop, Start Menu and taskbar.

Remove Js/Adrozek.A from Mac OS X system

macOS users should get rid of PUPs as explained below:

If your macOS is displaying some infection symptoms, proceed with the following guide:

Remove Js/Adrozek.A from Applications folder:

  1. From the menu bar, select Go > Applications.
  2. In the Applications folder, look for Js/Adrozek.A-related entries.
  3. Click on the app and drag it to Trash (or right-click and pick Move to Trash)Uninstall from Mac 1

To fully remove Js/Adrozek.A, you need to access Application Support, LaunchAgents, and LaunchDaemons folders and delete relevant files:

  1. Select Go > Go to Folder.
  2. Enter /Library/Application Support and click Go or press Enter.
  3. In the Application Support folder, look for any dubious entries related to Js/Adrozek.A and then delete them.
  4. Now enter /Library/LaunchAgents and /Library/LaunchDaemons folders the same way and terminate all the Js/Adrozek.A-related entries.Uninstall from Mac 2

Eliminate Js/Adrozek.A from Internet Explorer (IE)

Remove dangerous add-ons:

  1. Open Internet Explorer, click on the Gear icon (IE menu) on the top-right corner of the browser
  2. Pick Manage Add-ons.
  3. You will see a Manage Add-ons window. Here, look for Js/Adrozek.A and other suspicious plugins. Click on these entries and select Disable.Remove add-ons from Internet Explorer

Change your homepage if it was altered:

  1. Open IE and click on the Gear icon.
  2. Select Internet Options.
  3. In the General tab, delete the Home page address and replace it by your preferred one (for example,
  4. Click Apply and then select OK.Reset IE homepage

Delete temporary files:

  1. Press on the Gear icon and select Internet Options.
  2. Under Browsing history, click Delete…
  3. Select relevant fields and press Delete.Clear temporary files from Internet Explorer

Reset Internet Explorer:

  1. Click on Gear icon > Internet options and select Advanced tab.
  2. Select Reset.
  3. In the new window, check Delete personal settings and select Reset again to complete Js/Adrozek.A removal.Reset Internet Explorer

Erase Js/Adrozek.A virus from Microsoft Edge

Delete unwanted extensions from MS Edge:

  1. Select Menu (three horizontal dots at the top-right of the browser window) and pick Extensions.
  2. From the list, pick the Js/Adrozek.A-related extension and click on the Gear icon.
  3. Click on Uninstall at the bottom.Remove extensions from Edge

Clear cookies and other browser data:

  1. Click on the Menu (three horizontal dots at the top-right of the browser window) and select Privacy & security.
  2. Under Clear browsing data, pick Choose what to clear.
  3. Select everything (apart from passwords, although you might want to include Media licenses as well, if applicable) and click on Clear.Clear Edge browsing data

Reset MS Edge if that above steps did not work:

  1. Press on Ctrl + Shift + Esc to open Task Manager.
  2. Click on More details arrow at the bottom of the window.
  3. Select Details tab.
  4. Now scroll down and locate every entry with Microsoft Edge name in it. Right-click on each of them and select End Task to stop MS Edge from running.Reset MS Edge

If this solution failed to help you, you need to use an advanced Edge reset method. Note that you need to backup your data before proceeding.

  1. Find the following folder on your computer: C:\\Users\\%username%\\AppData\\Local\\Packages\\Microsoft.MicrosoftEdge_8wekyb3d8bbwe.
  2. Press Ctrl + A on your keyboard to select all folders.
  3. Right-click on them and pick DeleteAdvanced MS Edge reset 1
  4. Now right-click on the Start button and pick Windows PowerShell (Admin).
  5. When the new window opens, copy and paste the following command, and then press Enter:

    Get-AppXPackage -AllUsers -Name Microsoft.MicrosoftEdge | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\\AppXManifest.xml” -VerboseAdvanced MS Edge reset 2

Instructions for Chromium-based Edge

Delete extensions from MS Edge (Chromium):

  1. Open Edge and click select Settings > Extensions.
  2. Delete unwanted extensions by clicking Remove.Remove extensions from Chromium Edge

Clear cache and site data:

  1. Click on Menu and go to Settings.
  2. Select Privacy and services.
  3. Under Clear browsing data, pick Choose what to clear.
  4. Under Time range, pick All time.
  5. Select Clear now.Clear browser data from Chroum Edge

Reset Chromium-based MS Edge:

  1. Click on Menu and select Settings.
  2. On the left side, pick Reset settings.
  3. Select Restore settings to their default values.
  4. Confirm with Reset.Reset Chromium Edge

Uninstall Js/Adrozek.A from Mozilla Firefox (FF)

  1. Remove dangerous extensions
    Open Mozilla Firefox, click on the menu icon (top right corner) and select Add-ons Extensions. Click on menu icon and select 'Add-ons'
  2. Here, select Js/Adrozek.A and other questionable plugins. Click Remove to delete these entries. Select 'Extensions' and look for malicious entries. Click 'Remove' to get rid of each of them
  3. Change your homepage if it was altered by virus:
    Click on the menu (top right corner), choose Options General.
  4. Here, delete malicious URL and enter preferable website or click Restore to default.
  5. Click OK to save these changes. When in 'General' tab, delete malicious URL from 'Home Page' section or click on 'Restore to Default' button. Click 'OK' to save changes
  6. Reset Mozilla Firefox
    Click on the Firefox menu on the top left and click on the question mark. Here, choose Troubleshooting Information. Click on menu icon and then on '?'. Select 'Troubleshooting Information'
  7. Now you will see Reset Firefox to its default state message with Reset Firefox button. Click this button for several times and complete Js/Adrozek.A removal. Click on 'Reset Firefox' button for a couple of times

Delete Js/Adrozek.A from Google Chrome

If you are unable to eliminate suspicious browser activity, you should reset Google Chrome:

  1. Delete malicious plugins
    Open Google Chrome, click on the menu icon (top right corner) and select Tools Extensions. Click on menu icon. Select 'Tools' and 'Extensions'
  2. Here, select Js/Adrozek.A and other malicious plugins and select trash icon to delete these entries. Look for malicious entries and delete each of them by clicking on the Trash bin icon
  3. Change your homepage and default search engine if it was altered by your virus
    Click on menu icon and choose Settings.
  4. Here, look for the Open a specific page or set of pages under On startup option and click on Set pages. After clicking on menu and 'Settings', select 'Set pages'
  5. Now you should see another window. Here, delete malicious search sites and enter the one that you want to use as your homepage. Click 'X' to remove malicious URLs
  6. Click on menu icon again and choose Settings Manage Search engines under the Search section. When in 'Settings', select 'Manage search engines...'
  7. When in Search Engines..., remove malicious search sites. You should leave only Google or your preferred domain name. Click 'X' to remove malicious URLs
  8. Reset Google Chrome
    Click on menu icon on the top right of your Google Chrome and select Settings.
  9. Scroll down to the end of the page and click on Reset browser settings. When in 'Settings', scroll down to 'Reset browser settings' button and click on it
  10. Click Reset to confirm this action and complete Js/Adrozek.A removal. Click on 'Reset' button to complete your removal

Get rid of Js/Adrozek.A from Safari

  1. Remove dangerous extensions
    Open Safari web browser and click on Safari in menu at the top left of the screen. Once you do this, select Preferences. Click on 'Safari' and select 'Preferences'
  2. Here, select Extensions and look for Js/Adrozek.A or other suspicious entries. Click on the Uninstall button to get rid each of them. Go to 'Extensions' and uninstall malicious add-ons
  3. Change your homepage if it was altered by virus:
    Open your Safari web browser and click on Safari in menu section. Here, select Preferences as it was displayed previously and select General.
  4. Here, look at the Homepage field. If it was altered by Js/Adrozek.A, remove unwanted link and enter the one that you want to use for your searches. Remember to include the "http://" before typing in the address of the page. When in 'General', delete malicious URL and enter your desired domain name
  5. Reset Safari
    Open Safari browser and click on Safari in menu section at the top left of the screen. Here, select Reset Safari.... Click on 'Safari' and select 'Reset Safari...'
  6. Now you will see a detailed dialog window filled with reset options. All of those options are usually checked, but you can specify which of them you want to reset. Click the Reset button to complete Js/Adrozek.A removal process. Select all options and click on 'Reset' button

Choose a proper web browser and improve your safety with a VPN tool

Online spying has got momentum in recent years and people are getting more and more interested in how to protect their privacy online. One of the basic means to add a layer of security – choose the most private and secure web browser. Although web browsers can't grant a full privacy protection and security, some of them are much better at sandboxing, HTTPS upgrading, active content blocking, tracking blocking, phishing protection, and similar privacy-oriented features. However, if you want true anonymity, we suggest you employ a powerful Private Internet Access VPN – it can encrypt all the traffic that comes and goes out of your computer, preventing tracking completely.


Lost your files? Use data recovery software

While some files located on any computer are replaceable or useless, others can be extremely valuable. Family photos, work documents, school projects – these are types of files that we don't want to lose. Unfortunately, there are many ways how unexpected data loss can occur: power cuts, Blue Screen of Death errors, hardware failures, crypto-malware attack, or even accidental deletion.

To ensure that all the files remain intact, you should prepare regular data backups. You can choose cloud-based or physical copies you could restore from later in case of a disaster. If your backups were lost as well or you never bothered to prepare any, Data Recovery Pro can be your only hope to retrieve your invaluable files.

About the author
Linas Kiguolis
Linas Kiguolis - Expert in social media

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