How to Install Avast Antivirus?

Avast antivirus is one of the security applications designed for multiple operating systems. Their versions detect threats like spam, spyware, phishing, and removes them. In addition to computer security, it safeguards your browser and firewall. Use the quick how to Install Avast Antivirus guide install it. The Avast antivirus is designed exclusively for devices connected to the Internet.

How to Install Avast Antivirus

Steps to Install Avast Antivirus

issues with avast antivirus
  • The Avast Antivirus software installation process is just like downloading any other software from a trusted site and installing it.
  • It is important to select the correct download link/button based on your OS and to check the version that is compatible with your system or it may cause Issues with Avast Antivirus.
  • Launch the downloaded file and fill in the basic queries asked in the series of installer wizards.
  • The wizard may vary based on your OS but the information requested will almost be the same.

How to Install Avast Antivirus on Windows?

Before you begin to follow the how to Install Avast Antivirus procedure, make sure you log into your Windows system using the administrator account.

  • Disable any antivirus software already running on your system.
  • To install the Avast Antivirus software, you need to download the Avast antivirus setup file from an authorized site.
  • Do not exit the page until the download is complete.
  • Once done, you can see a notification at the bottom indicating that the Avast application is downloaded.
  • Click the Run option in the notification box, and a wizard appears asking your permission to access your device. Select Yes.
  • Wait until the application completes its initialization and launches on its own.
  • On the home screen, uncheck the box next to the Yes, try the Google Chrome browser statement before clicking the Install button.
  • The progress of the installation process can be seen at the bottom of the screen. When it ends, click the Continue button.
  • Make sure to read the privacy policy and click Continue in the next screen before you exit.

How to Install Avast Antivirus on Mac?

Though your MAC system is not prone to threats like malware, you need to install the antivirus software to provide internet security as malicious sites and Wi-Fi networks can make your system vulnerable.

  • Numerous sites open when you search for Avast antivirus in your browser.
  • Download the application only from a trusted site. The setup file gets saved in the .dmg format on your desktop.
  • Now, click the application to open it.
  • Click the unwrapped box icon above Avast Security and open it.
  • Agree to the License Agreement and select a location in your system to save the application.
  • Choose the name of the Avast package and select the Install button.
  • Before the installation begins, a wizard appears. Enter the system login details.
  • Wait for the installation process to end.
  • Select the Close button to exit from the final wizard.
  • Now you will see the Avast antivirus icon with the letter ‘a’ in an orange background on your desktop.

Steps to
Activate Avast

  • Activation of the antivirus is easy if you are using a paid version of the Avast software.
  • After purchasing the paid version, the license key will be sent to your registered email address.
  • Double-click the license file located on your system to begin the activation process.
  • Click Yes option to confirm your choice and start the activation.
  • The alternate method to activate the Avast antivirus is to insert the license key.
  • A warning message displays on the home screen of the antivirus.
  • Click the Activate option and enable the Settings option.
  • After a few minutes, the subscription will be active.

How to Enable
Strong-Self Protection In Avast?

Strong Self Protection is available in Avast Antivirus. Certain viruses may deactivate the software for a while. When you open the antivirus, the self-protection feature will be turned on automatically. To disable the antivirus, follow the how to Install Avast Antivirus steps below.

  • Open the Avast software on your system.
  • A settings option is available on the left corner of the screen.
  • Click the option to view the Basic Settings of the software.
  • Select the Troubleshooting option.
  • Remove the checkmark adjacent to Enable Avast! Self-defense module.
  • After disabling it, click OK to save the changes on the network to avoid any Issues with Avast Antivirus.

Steps to Turn On Avast Firewall Settings

A firewall is a security feature available in the Avast Internet Security. It manages the incoming and outgoing traffic. It is enabled while installing the software. To turn it off and refer to the guidelines provided below.

  • Launch the Avast Internet Security and select Settings.
  • If the firewall is enabled under the Active Protection, use any of the options from the drop-down menu.
  • Click the Stop for 10 minutes option to disable it for 10 minutes.
  • The other options displayed on the drop-down menu are Stop for 1 hour and Stop until restart of the computer. This process can be carried out at a specified period.
  • You can also choose the Stop permanently option to deactivate the Avast firewall. Select OK to save the changes.

How to Enable Avast Secure Browsing?

Avast Secure Browser is an upgraded version of Avast. If you have an outdated version, uninstall and reinstall it to get the latest one. Here are the simple steps to know how to Install Avast Antivirus. Download the most recent Avast Antivirus software to get a browser along with it. To open the browser, double-click the icon, and select Taskbar. You can find it on the Start menu of the system.

How to Scan for Malware in Avast?

  • Download and launch the Avast software on your personal computer.
  • After downloading the software, right-click on the System tray icon on the taskbar.
  • Choose the Open Avast User Interface option and select any tile from the left pane.
  • The Avast User Interface dialog box opens on your desktop.
  • Go to the Protection tab and then click on the Virus Scans option.
  • Choose the Run Smart Scan button for performing a smart scan process.
  • For a full scan, select the Full Virus Scan tile. If you want to make a targeted scan, choose Targeted Scan and then select the folder or file.
  • Click on the OK button. For boot-time scanning, choose the Boot-Time Scan tile and then select the Run On Next PC Reboot option.
  • If you wish to make a customized scan, click Custom Scans and select the Scan Now option for the scan that you wish to run.

How to Schedule Automatic Scan in Avast?

  • It is essential to run the anti-virus software on your personal computer regularly to make sure it is free from viruses and malware.
  • Using the Avast software, you can schedule the scan on a daily, weekly, or monthly basis.
  • Once you schedule the scan process, Avast will scan your system automatically at the designated time.
  • The scan can be scheduled on either the free or paid version of the Avast software.
  • Go to your computer and then open the Avast user interface software.
  • Click the Antivirus option. If the dialog box does not appear on your screen, choose the Scan Now button.
  • On the bottom right corner of your desktop, choose the Create Custom Scan option.
  • Select Scheduling and then tick the checkbox provided next to the Schedule this scan option reduce the Issues with Avast Antivirus.
  • In the Schedule Type drop-down list box, choose the frequency of the scan that you wish to utilize.
  • Select the day and time of the scan in the Schedule pop-up window. Click the OK button to save the process.

Steps to Enable Avast email Security

  • If you are using desktop inboxes such as Outlook, Thunderbird or Gmail, Avast utilizes the Mail Shield feature to stop receiving dangerous and annoying spam messages.
  • A short signature is added to your email by Avast to show the recipients that all your mails are safe.
  • The steps for enabling the Avast Email Security feature are provided below.
  • Click on the Avast icon that is available on your system tray to open the Avast software.
  • A small Gear shaped icon called the Settings option is present on the top right corner of your desktop. Click on the icon to access the various available options.
  • Tick the checkbox next to the Enable Avast Email Signature option under the General window.
  • Confirm the process by clicking on the OK button and then restart the browser.
  • The email security feature is now enabled on your Avast software. If you want start from the first use how to Install Avast Antivirus instructions.

How to enable Avast Web Scanning?

  • HTTPs scanning is a component of the Web Shield feature in the Avast Anti-virus software.
  • The steps for turning On the Avast Web Scanning feature are given below.
  • Open Avast by double-clicking on the icon of the installed software on the desktop.
  • To explore the features of Avast, choose a tile from the left side of the screen.
  • The Avast User Interface pop-up window opens on your personal computer.
  • Choose the Menu icon and then select the Settings option.
  • Click on Protection available on the left pane and select the Core Shields option.
  • Go to the Configure Shield Settings section and choose the Web Shield tab.
  • Mark on the box next to the Enable HTTPs Scanning option to turn On the web scanning feature.

Steps to block URL's in Avast Webshield

  • Right-click on the Avast icon. Select the Open Avast user interface option.
  • Click the Real-Time Shields option.
  • Select the Web Shield on the left of the screen. The Avast settings window opens.
  • Tap the Stop option to disable the Web Shield option.
  • Click the Stop for 10 minutes to disable the Webshield option temporarily. Similarly, click the Stop Permanently to stop it entirely.
  • Click Yes to confirm the changes.

How do I Configure Privacy Settings in Avast?

  • On your Windows, open the Avast antivirus. Select the Menu option followed by Settings.
  • Select the General tab above the Protection option. Click the Personal Privacy option.
  • Mark the options you wish to enable. Similarly, deselect the options you want to disable. Click the red X symbol to go back to the Avast antivirus main screen.
  • Your Personal Privacy settings are updated successfully.
  • For Mac, follow the how to Install Avast Antivirus instructions given below.
  • Click the SecureLine VPN Open Avast SecureLine VPN Preferences.
  • Now, click the General tab. Tick the box to opt IN. Deselect the box to opt out. Privacy settings are set successfully.

How to enable Passive Mode In Avast?

  • Double-click on the Avast icon. When the Avast interface window opens, select the equivalent option.
  • On the Avast interface window, click the Menu button. Select the Settings option under Menu.
  • Now, tap the Troubleshooting option. Click the Red switch in the Passive Mode.
  • As soon as you click the Red switch, it changes to green. Tap the Yes button to confirm the change.
  • Click the Restart Now button when prompted.
  • Once the computer restarts, check if the Avast Passive Mode is enabled.

How to Update Avast?

  • Avast antivirus software update can be done in two ways; through the user interface or the taskbar.
  • Follow the instructions given below to update Avast through the user interface.
  • Open the Avast Antivirus software on your system. Click the Settings options, select Update below Active Protection, and then tap Update.
  • To update through Taskbar, follow the instructions provided below.
  • Select & right-click on the Avast icon available on your system’s taskbar. Choose Update and tap the Program option. Wait for the update to complete.
  • Click the Reboot Now option when prompted.

How to Renew Avast Subscription?

  • Search for a browser on your computer. Open the browser and log into the official page of the Avast antivirus software.
  • Choose the app you want to renew. You have to select a plan.
  • The renewal plans cover one, two or three years.
  • Provide your email address and contact information to complete the payment process. The payment can be made through credit card.
  • To open the system tray, click the small arrow in the taskbar.
  • Select & right-click on the Avast icon and click Subscription information.
  • Tap on Insert License File and select the folder which contains the license file. Open the file to be read by Avast for completing the renewal of the subscription plan.

How to Remove Avast Completely?

  • Use Avastclear software to uninstall the Avast antivirus from your computer.
  • You can download the uninstall software from the official page of the Avast.
  • Open the software on your system. Make sure to start the Window in the Safe mode.
  • Now, open the Uninstall utility option. Ensure that the Avast folder and the uninstall software are placed in the same folder.
  • Click the Remove button. The uninstall process begins on your system.
  • Once the uninstallation is complete, reboot your computer. To install it agin follow the how to Install Avast Antivirus steps.


Some of the Issues with Avast Antivirus that occur while using the Avast Anti-Virus can be fixed by performing the general troubleshooting methods

How to Fix Delay in Loading Avast?

Avast software uses a sophisticated security component called Web Shield. This feature can affect the speed of the internet connection. However, it serves as a highly protective component for your device.

If you wish to turn it off, follow the guidelines below.

  • Launch the Avast User Interface software and click Menu.
  • Select Settings and click Protection.
  • Choose Core Shields and push the slider to turn it off.
  • Set a duration until which you want to disable it and click Save.

Troubleshooting the "UI Failed to load" error message in Avast

In certain cases, Avast Anti-virus displays the UI Failed to Load error message. This is due to the incorrect windows services configuration. Click Restart Services. If this did not work out, perform the instructions below.

  • Press the Windows and R keys simultaneously.
  • Type Services.msc and click OK.
  • Right-click Remote Desktop Services and choose Properties.
  • Click the drop-down menu next to the Startup Type and choose Automatic.
  • Select Apply and click the Start button. Restart your computer and try to use the Avast Anti-Virus software.

How to Fix Installation
Errors created by Setup Files?

When you are trying to download the Avast product on your computer, error may occur as the setup file may be incomplete or corrupted. To check if the file is corrupted, go to the Downloads location on your computer and right-click on the Avast product name. Click Details and check if the Digital Signature is OK. If this is done, download the file again.

No longer Works Properly

If one or more Anti-Virus software are installed on your computer, Avast may not work properly. To solve the problem, uninstall the other security software from your computer. If the problem prevails, delete the Avast software and re-install it.

Windows reports Avast
Antivirus Firewall is turned off

  • Launch the Avast Anti-Virus user interface and select Menu.
  • Click Settings and go to the Protection tab.
  • Select Firewall and check if it is turned on.
  • If not, turn it On.

How to Fix unprotected status or inactive
A Firewall in Avast Antivirus?

You can repair and update Avast Antivirus to fix the unprotected status.

  • Log into your Windows computer as an administrator and click the Start menu.
  • Choose Apps and Features from the menu. Click your Avast Antivirus and select Uninstall.
  • Select Repair on the Avast Setup wizard.
  • Click Done once the repairing process is complete.
  • Now, try to use the Avast software.
how to update avast

Steps to Fix Windows does not detect Avast Antivirus installation

  • Power on your Windows computer and log in as an Administrator.
  • Right-click on the Windows Start menu and choose Command Prompt.
  • On the User Account Control screen, click the Yes button.
  • Restart your computer. The Anti-virus will be installed correctly in the Action Center or use how to Install Avast Antivirus guidelines.

Restore Factory Default

  • Launch the Avast User Interface on your PC.
  • Enter your Master Password in the respective fields and click Settings.
  • Select Reset Avast Passwords and Delete My Data.
  • Click Delete and go back to the Passwords fields.
  • Select Get Started to start the setup again to clear any Issues with Avast Antivirus.


How do I Disable Self Protection Module?

  • Open the Avast Antivirus program on your computer.
  • Navigate to the Settings menu and select the Troubleshooting tab from it.
  • Uncheck the box next to the Enable Avast! Self-Defense Module option.
  • Tap the OK option to save the settings.
  • The Self-protection module is now disabled.

End Of Support For Windows XP/Vista

From 1st December 2018, Avast has not released any updates for the Windows XP/Vista users. Since the demand for the higher versions of Windows OS is increasing, Avast will concentrate more on that. However, people who have Windows XP/Vista can still use the 18.8 versions. They will not be able to update to the recent version 19.1. The earlier versions will work as usual, but will not be able to install any updates.

Game Automatically Crashes When Avast Is On

  • You can exclude the particular game from Avast to stop this issue.
  • To do so, you have to right-click on the Avast icon present at the bottom of the screen.
  • Choose the Program settings option and select the Exclusions option.
  • Tap the Browse button and choose the path to the game that you want to exclude from Avast.
  • Now your game will not crash while playing.

Problem With The Windows System Assessment Tool (Winsat) & Avast (Free)

  • The first solution is to update the Avast Antivirus to the latest version.
  • If that does not work, perform a Boot-Time Scan to solve the issue.
  • Launch the Avast Antivirus program on your system and navigate to Protections tab.
  • Select the Scans option and choose the Boot-Time Scan option and tap the Run on Next PC Reboot option.
  • Now, restart your computer, and the boot-time scan will start.
  • Uninstall the Antivirus from your system and install it again to resolve the problem.


Windows 10 Kb4493509 Issues

  • If you face any Issues with Avast Antivirus while you install the update, try out the following solutions to resolve it.
  • First, you have to boot into the safe mode.
  • The next step is to disable the Anti-virus service from your computer.
  • Next, try to boot into the normal mode.
  • If that does not work, then uninstall the Windows KB to sort out this error.

License Renewal Not Working

  • If you are not able to renew your license, then make use of the how to Install Avast Antivirus instructions specified renew it.
  • Uninstall your Avast Antivirus product and install it again. Try to renew the license now.
  • Check if any updates are released for the Avast program. Upgrade it if there are any updates.
  • Renew the license now.
  • If this does not work, contact the technical experts to solve this issue.

Microsoft Outlook Doesn't Connect If Avast Is Enabled

  • Verify your Avast Firewall as the first solution. Set it to the private mode and reboot your system to rectify the issue.
  • Open the Avast Graphical User Interface on your system and navigate to the settings option.
  • Select the Troubleshooting tab and tap the Repair App option.
  • Read the instructions and follow them.
  • Restart your system and check if the error has been solved.
  • Else, download and run the Avast Support Tool to resolve this error.

Avast Free Virus Definition Updates Make Full My Hard Drive

  • Update the Virus Definition to the latest version to resolve this problem.
  • For updating, you should right-click on the Avast icon from the desktop to open it.
  • Select the Update option and choose Engine and Virus Definitions option.
  • The Avast will check for any updates and install it on your system.
  • Click the Restart Now option to reboot your PC, your hard drive will not become full or repeat the how to Install Avast Antivirus steps again.