Summary :

Things to do when Avast Antivirus Not Installing On Windows You must make sure that your computer matches the minimum system requirements to install Avast antivirus. Your computer’s windows must be up-to-date. Make sure that your downloaded file is not corrupted. The steps below apply to Avast Omni, Avast Premium Security, and Avast Free Antivirus. Check that your PC meets the system requirements below: Windows 10 except Mobile and IoT Edition (32 or 64-bit); Windows 8/8.1 except RT and Starter Edition (32 or 64-bit). The default installation location is selected automatically, so you do not need to make further adjustments unless you changed the default installation. Select Avast Free Antivirus in the drop-down menu. Then, click Uninstall. Wait while the Avast Uninstall Utility removes all Avast Free Antivirus files from your PC. Click Restart computer to.

If you encounter the case that Avast fails to run on Windows, you really need to read this post. First of all, it will show you a couple of possible causes of this issue. Meanwhile, it will also show you several feasible methods to fix this issue. You can get the details from the MiniTool website.

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Avast is a very common antivirus option that provides solid protection against viruses for free, but you can also use a paid version. From day one, however, there are a lot of different problems surrounding Avast. One of the most common problems is Avast not opening on Windows with no error messages.

In order to get rid of this problem, people have tried several different ways. This post will show you some of the most helpful methods and hope your problem can be fixed.

Tip: You may be interested in this post: The Popular Types Of Computer Virus You Should Know.

Why Is Avast Not Opening on Windows?

Broken Avast Installation
Avast Antivirus Service Not Running Properly

Reasons for Avast Not Opening on Windows

Avast may not open because of many different problems. This part will show you the most common reasons that affect most users. You need to determine the correct reason to find the best solution for this issue and solve the problem as soon as possible.

Tip: Malwarebytes is also a popular Windows antivirus tool and you may encounter some problems while using it. Read this post to learn how to fix the Malwarebytes service high CPU problem on Windows.

1.Broken Avast Installation

Avast installation might be broken because of many different reasons, but fortunately, Avast provides you with some ways to fix this problem, such as fixing the installation or performing a clean install.

2.Avast Antivirus Service Not Running Properly

Avast antivirus service is not working properly, which may also cause Avast not opening on Windows. If the main service has a problem, the solution is simple: you can restart Avast antivirus service and then check to see if the issue has been fixed.

If you want to know how to fix Avast not opening on Windows issue, keep reading.

Now you have many sensitive data, thus you need a reliable defense software to protect your data. This post gives information on Windows Defender vs Avast.

How to Fix Avast Not Opening on Windows?

Repair Avast
Restart the Avast Antivirus Service
Perform a Clean Install

Solution 1: Repair Avast

If Avast installation is having problems, for example, it won't open at all, the best way is to fix the Avast installation by finding the Control Panel and then following the repair wizard. This solution works for a lot of people but considering that you may need to readjust some settings, you may have changed them in your antivirus.

Step 1: First, make sure you log in with an administrator account because you won't be able to use any other accounts to delete the program.

Step 2: Type control panel in the search bar and click Control Panel to open it.

Step 3: In Control Panel, select View by: Category and click Uninstall a program under the Programs section.

Step 4: In the Program and Features window, navigate to Avast, right-click it and then select Uninstall to uninstall Avast.

Tip: You can also uninstall Avast from Settings. First, click the gear icon to open Settings if you are using Windows 10. Then click Apps to open Apps & features. Finally, you can find Avast from the list of all installed programs on your PC and then uninstall it.

Step 5: The uninstall wizard of Avast should provide you with several options including Update, Repair, Modify, and Uninstall. Choose Repair and then click Next to fix the problem of Avast installation.

Step 6: A message will display on the screen that asks you to confirm the process.

Step 7: After completing the uninstallation process, click Finish. Then restart the computer to check if Avast now opens properly.

Solution 2: Restart the Avast Antivirus Service

If there is an error related to the Avast Antivirus service, Avast not opening on Windows issue may also occur. You can easily restart the service to fix this issue and this method is very easy to use by everyone. What you need to do is following the steps below carefully and then you can restart the Avast Antivirus service.

Step 1: Press the Windows key + R key at the same time to open the Run utility. Type services.msc in the Run dialog box and then click OK to open the Services window.

Tip: You can also run the Services tool from the Control Panel. First, open Control Panel and select View by Large Icons. Then click the Administrative Tools option and finally click the Services shortcut at the bottom to open it as well.

Step 2: In the Services window, navigate to the Avast Antivirus service on the list. Right-click the service and click Properties from the pop-up window.

Step 3: Check to see if the service is started or stopped from the Service status section. If the status of the service is Started, click the Stop button to stop it. If the status of the service is Stopped, keep it stopped until you continue to execute.

Step 4: Before proceeding to any other steps, make sure that the option under the Startup type menu is set to Automatic. Verify any dialog boxes that may appear when changing the startup type. Before exiting, click the Start button. After that, you may receive an error message:

“Windows could not start the Avast Antivirus service on Local Computer. Error 1079: The account specified for this service differs from the account specified for other services running in the same process.”

If you really receive this error message, you can follow the steps below to fix the error.

Step 1: Follow the methods mentioned above to open the Properties window of the Avast Antivirus service.

Step 2: Switch to the Log On tab and click on the Browse… button.

Step 3: Under the Enter the object name to select entry box, input the name of your account, click the Check Names button and wait for your account’s name to be available.

Step 4: When you finish the steps above, click OK. If you have set up a password, type the password in the Password box.

After you complete all the steps above, the Avast not opening on Windows issue should be fixed now.

Solution 3: Perform a Clean Install

Performing a clean install can fix almost everything including the Avast not opening on Windows issue. It is very simple for you to perform a clean install. If all methods mentioned above fail to fix this issue, you can try this method right now.

Not only does it perform the regular uninstall, it also removes the cache file and any related registry entries that may have been corrupted.

You can follow the steps below to execute a clean install.

Step 1: Get into the download page of Avast, click the FREE DOWNLOAD FOR PC button to download the latest version of the Avast installation.

Step 2: Get into the uninstallation page of Avast, download the uninstallation utility – avastclear and save it to your computer.

Step 3: Aft