Remove App From Mac High Sierra

Nov 30, 2019  Mac OS X and macOS have a few restrictions in place about which items you can remove. The Finder and the Trash are permanent members of the Dock. There's also a separator (a vertical line or dotted line icon) that marks where apps end and documents, folders, and other items begin in the Dock.

  1. Dec 30, 2017  High Sierra has been most disruptive to my work. I can't print, Photos has lost its workflow. Very unhappy. I wish to return to Sierra with its associated apps. How do I uninstall & Reinstall Sierra? Mac mini (Late 2012), iOS 10 Posted on Nov 9, 2017 11:50 AM.
  2. Secure configuration for Mac OS 10.13 High Sierra This guidance was developed following testing performed on MacBook Pro and MacBook Air devices running macOS 10.13 (High Sierra) It's important to remember that this guidance has been conceived as a way.

How to remove 'Your MacOS 10.13 High Sierra is infected with 3 viruses!' from Mac?

What is 'Your MacOS 10.13 High Sierra is infected with 3 viruses!'?

'Your MacOS 10.13 High Sierra is infected with 3 viruses!' is one of many fake virus alert messages. It targets MacOS users only and is displayed on untrustworthy, deceptive web pages. Typically, users arrive at these sites inadvertently - they are forced to visit them by potentially unwanted applications (PUAs) that users often install inadvertently. Once installed, PUAs cause unwanted redirects to deceptive websites, feed users with various ads, and gather data relating to browsing activity.

Scammers behind the 'Your MacOS 10.13 High Sierra is infected with 3 viruses!' fake virus alert claim to be Apple support team members and state that their website has detected a trojan virus (e.tre456_worm_osx) on your Mac computer. According to this alert, as well as the trojan, three other virus infections have been detected: two malware infections and one spyware/phishing infection. Scammers urge users to take immediate action and remove the detected viruses to prevent system damage and data loss. They give users five minutes. Note that Apple has nothing to do with this scam. Cyber criminals use the company name to promote their fake product, which they state will remove viruses and prevent any further damage. In this case, they promote the Mac Cleanup Pro application. When installed, this app will detect even more infections and other problems on a Mac computer, however. This is simply a way to trick people into purchasing this product by displaying fake results. The scan itself is free, but removal of detected issues must be purchased. Never trust scammers or purchase/use their apps. We recommend that you ignore 'Your MacOS 10.13 High Sierra is infected with 3 viruses!' simply by closing the browser window or tab. If this deceptive website prevents you from closing the window/tab, use Activity Monitor to force-quit the browser. Do not restore the closed session, since this will reopen the same deceptive website (or another site that led you there).

Users commonly arrive at these websites due to installation of potentially unwanted apps. These PUAs cause redirects to deceptive websites, deliver intrusive ads, and gather data. They display coupons, banners, surveys, pop-ups, and so on. They are displayed via tools that enable placement of third party graphical content on any site and also conceal underlying content. They affect browsing quality and, if clicked, lead to untrustworthy websites or run scripts designed to download other unwanted apps. Furthermore, PUAs record browsing-related data (such as IP addresses, keystrokes, search queries, URLs of visited websites, etc.) and also personal details. Developers share the data with third parties (potentially, cyber criminals) who misuse it to generate revenue. Thus, having these apps installed can lead to computer infections, privacy/browsing safety problems or even identity theft.

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Threat Summary:
Name'Your MacOS 10.13 High Sierra is infected with 3 viruses!' virus
Threat TypeMac malware, Mac virus
SymptomsYour Mac became slower than normal, you see unwanted pop-up ads, you get redirected to shady websites.
Distribution methodsDeceptive pop-up ads, free software installers (bundling), fake flash player installers, torrent file downloads.
DamageInternet browsing tracking (potential privacy issues), displaying of unwanted ads, redirects to shady websites, loss of private information.
Malware Removal (Mac)

To eliminate possible malware infections, scan your Mac with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
▼ Download Combo Cleaner for Mac
To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.

Many similar websites display fake messages and virus/error, and other, alerts. Some examples of other fake messages are Your OS High Sierra Is Infected With (3) Viruses!, Your Computer Was Locked, and Mac OS Support Alert. Scammers often use these fake messages to trick people into believing that their computers are infected or damaged, and to encourage them to purchase unnecessary products or technical support/guidance. Most PUAs are very similar - developers promote them as 'useful tools', however, these are merely attempts to give the impression of legitimacy and to trick users into downloading and installing them. Typically, they deliver none of the functionality promised and are designed only to generate revenue for the developers.

How did potentially unwanted applications install on my computer?

Some potentially unwanted apps are available for download on their official websites, however, many users are tricked into installing them through clicked intrusive advertisements or a deceptive marketing method called 'bundling'. Developers use this method to trick users into installing unwanted applications together with other software. In most cases, PUAs are hidden in 'Custom', 'Advanced' (and other similar) options/settings of the installation/download dialogs. Information regarding the presence of PUAs in the download/installation set-ups is not properly disclosed. Nevertheless, inadvertent installations are usually caused by users who skip installation steps, leave download/installation settings unchanged, and click various ads.

How to avoid installation of potentially unwanted applications?

Careless behaviour and poor knowledge of these threats are the main reasons for problems relating to online safety and privacy. To protect your privacy and keep your computer safe, browse the web and download, install software carefully. Do not download software from unofficial/untrustworthy websites, using third party downloaders/installers, or other such tools. Check all available 'Custom', 'Advanced', and other similar options when installing or downloading software. Many malicious/untrustworthy advertisements lead users to adult dating, pornography, gambling, and other similar untrustworthy websites. If you experience constant redirects to these websites, check all extensions, add-ons, and plug-ins that are installed on your browser and remove any suspicious/unwanted entries immediately. Also apply this to suspicious programs installed on your computer. If your computer is already infected with PUAs, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate them.

Appearance of 'Your MacOS 10.13 High Sierra is infected with 3 viruses!' scam (GIF):

Text presented in deceptive website pop-up window:

IMMEDIATE ACTION REQUIRED

We have detected a trojan virus (e.tre456_worm_osx) on your Mac.

Press OK to begin the repair process.

Screenshot of deceptive website background:

Text presented in deceptive website background:

Your Mac is infected with 3 viruses. Our security check found traces of 2 malware and 1 phishing/spyware. System damage: 28.1% - Immediate removal required!

The immediate removal of the viruses is required to prevent further system damage, loss of Apps, Photos or other files. Traces of 1 phishing/spyware were found on your Mac with OSX.

To avoid more damage click on 'Scan Now' immediately. Our deep scan will provide help immediately!

4 minute and 22 seconds remaining before damage is permanent.

Screenshot of a Mac Cleanup Pro app:

Instant automatic Mac malware removal:Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of Mac malware. Download it by clicking the button below:
▼ DOWNLOAD Combo Cleaner for MacBy downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.

Quick menu:

  • STEP 1. Remove PUA related files and folders from OSX.
  • STEP 2. Remove rogue extensions from Safari.
  • STEP 3. Remove rogue add-ons from Google Chrome.
  • STEP 4. Remove potentially unwanted plug-ins from Mozilla Firefox.

Video showing how to remove unwanted applications distributed by fake 'Your MacOS 10.13 High Sierra is infected with 3 viruses!' pop-up scam:

Potentially unwanted applications removal:

Remove potentially unwanted applications from your 'Applications' folder:

Click the Finder icon. In the Finder window, select 'Applications'. In the applications folder, look for 'MPlayerX', 'NicePlayer', or other suspicious applications and drag them to the Trash. After removing the potentially unwanted application(s) that cause online ads, scan your Mac for any remaining unwanted components.

Combo Cleaner checks if your computer is infected with malware. To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.

Remove 'your macos 10.13 high sierra is infected with 3 viruses!' virus related files and folders:

Click the Finder icon, from the menu bar. Choose Go, and click Go to Folder..

Check for adware-generated files in the /Library/LaunchAgents folder:

In the Go to Folder.. bar, type: /Library/LaunchAgents


In the “LaunchAgents” folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist”, etc. Adware commonly installs several files with the same string.

Check for adware generated files in the /Library/Application Support folder:

In the Go to Folder.. bar, type: /Library/Application Support


In the “Application Support” folder, look for any recently-added suspicious folders. For example, “MplayerX” or “NicePlayer”, and move these folders to the Trash.

Check for adware-generated files in the ~/Library/LaunchAgents folder:


In the Go to Folder bar, type: ~/Library/LaunchAgents

In the “LaunchAgents” folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist”, etc. Adware commonly installs several files with the same string.

Check for adware-generated files in the /Library/LaunchDaemons folder:


In the Go to Folder.. bar, type: /Library/LaunchDaemons


In the “LaunchDaemons” folder, look for recently-added suspicious files. For example “com.aoudad.net-preferences.plist”, “com.myppes.net-preferences.plist”, 'com.kuklorest.net-preferences.plist”, “com.avickUpd.plist”, etc., and move them to the Trash.

Scan your Mac with Combo Cleaner:

If you have followed all the steps in the correct order you Mac should be clean of infections. To be sure your system is not infected run a scan with Combo Cleaner Antivirus. Download it HERE. After downloading the file double click combocleaner.dmg installer, in the opened window drag and drop Combo Cleaner icon on top of the Applications icon. Now open your launchpad and click on the Combo Cleaner icon. Wait until Combo Cleaner updates it's virus definition database and click 'Start Combo Scan' button.

Combo Cleaner will scan your Mac for malware infections. If the antivirus scan displays 'no threats found' - this means that you can continue with the removal guide, otherwise it's recommended to remove any found infections before continuing.

After removing files and folders generated by the adware, continue to remove rogue extensions from your Internet browsers.

Delete App Mac High Sierra

'Your MacOS 10.13 High Sierra is infected with 3 viruses!' virus removal from Internet browsers:

Remove malicious extensions from Safari:

Remove 'your macos 10.13 high sierra is infected with 3 viruses!' virus related Safari extensions:

Open Safari browser, from the menu bar, select 'Safari' and click 'Preferences..'.

In the preferences window, select 'Extensions' and look for any recently-installed suspicious extensions. When located, click the 'Uninstall' button next to it/them. Note that you can safely uninstall all extensions from your Safari browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Safari.

Remove malicious plug-ins from Mozilla Firefox:

Remove 'your macos 10.13 high sierra is infected with 3 viruses!' virus related Mozilla Firefox add-ons:

Open your Mozilla Firefox browser. At the top right corner of the screen, click the 'Open Menu' (three horizontal lines) button. From the opened menu, choose 'Add-ons'.

Choose the 'Extensions' tab and look for any recently-installed suspicious add-ons. When located, click the 'Remove' button next to it/them. Note that you can safely uninstall all extensions from your Mozilla Firefox browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Mozilla Firefox.

Remove malicious extensions from Google Chrome:

Remove 'your macos 10.13 high sierra is infected with 3 viruses!' virus related Google Chrome add-ons:

Open Google Chrome and click the 'Chrome menu' (three horizontal lines) button located in the top-right corner of the browser window. From the drop-down menu, choose 'More Tools' and select 'Extensions'.

In the 'Extensions' window, look for any recently-installed suspicious add-ons. When located, click the 'Trash' button next to it/them. Note that you can safely uninstall all extensions from your Google Chrome browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Google Chrome.

Want to uninstall iTunes on your Mac but find it is not easy to finish? Read this post to learn steps to uninstall and reinstall iTunes on Mac (macOS Sierra included).

iTunes Tips & Issues

iTunes Basic Learning
iTunes Music Tips
iTunes Libary Tips
iTunes Connection Issues
Other iTunes Data Issues

Uninstalling iTunes on Mac requires some skill and tricky. On a Windows PC, you can easily uninstall iTunes from Start menu > Control Panel > Uninstall a program.

However, iTunes is a default application of Mac OS and when you try to drag the iTunes application file to the Trash, a warning message will pop up and say “iTunes” can’t be modified or deleted because it’s required by OS. Don’t be upset. Here in the following, we will show you how to delete iTunes from Mac, and also share you the way to reinstall iTunes. Keep on.

Part 1. How to Uninstall and Reinstall iTunes on Mac (macOS Sierra)

Step 1. Go to the Applications folder and find the iTunes app.

Step 2. Right-click on iTunes and select Get Info.

Step 3. Locate and click on the padlock icon at the bottom right of the window, and you need to enter your admin password.

Step 4. Click and expand the Sharing & Permissions section. Change the privileges for “everyone” to Read & Write. This will give you complete control of the iTunes application so you can uninstall iTunes from your Mac.

Step 5. Close the Get Info window and drag the iTunes application to the Trash. You can still put back iTunes if you haven’t emptied the Trash.

How to Uninstall iTunes on Mac

Step 6. To reinstall iTunes, just go to App Store or download from the Apple website.

Part 2. An iTunes Alternative Tool to Manage iOS Files on Mac

If you feel disappointed about iTunes and want to manage your iOS files on Mac in a more flexible way, try an iTunes alternative tool – AnyTrans. It is a 100% safe yet professional iOS File Manager works on PC and Mac, allowing you to export, import as well as backup files on iPhone, iPad, iPod, like music, ringtones, videos, photos, contacts, messages, and other up to 31 file types.

Also, it allows you to manage your iTunes library and iCloud backups, viewing backup details and transferring certain items to computer or device. With AnyTrans, you can also transfer files from iPhone to iTunes/Mac/PC, and even to another iOS device. More than anything, unlike iTunes, it will not erase any existing data on your device while syncing. Now, download AnyTrans to have a try.

iTunes Alternative Tool to Manage iOS Files on Mac – AnyTrans

Part 3. An iTunes Alternative Tool to Restore Backup

If you choose to uninstall or reinstall iTunes just for restoring backup, then you may have another better choice. PhoneRescue – iOS Data Recovery can easily get back all your lost files from iTunes backup, like photos, videos, messages, contacts, notes, voice memos, etc. even it’s damaged or encrypted. To ensure maximum recovery rate, it offers you 3 recovery modes: Recover from iOS Device (without backup), Recover from iTunes Backup, Recover from iCloud Backup.

Also, it allows you to preview and selectively recover the files. That’s to say, you can retrieve the files you needed most, but not a blind full restore. The primary one is that it will not wipe any previous data on your device while restoring from iTunes/iCloud backup. Give it a try to restore your backup now.

High Sierra App Store

iTunes Alternative Tool to Restore Backup – PhoneRescue

Remove App From Mac High Sierra Vista

The Bottom Line

That’s all for how to uninstall and reinstall iTunes on Mac, hope this guide can bring you convenience. If you feel this article is helpful, you can share it with your friends.

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