No doubt, the Avast Antivirus application is one of the best protectors for any device (PC or smartphone). It provides several unique features that help you protect the system from online threats, and it keeps your personal data secure as well. Many users reported that whenever they try to install or uninstall the Avast software, they see an error prompt on the computer screen stating, “Setup is already running. Please try to start the setup later.” From there, you won’t get any detailed information about the problem, and you might be thinking about the root cause of the error. For this reason, we have given some useful troubleshooting ideas that will solve the Avast error on your computer.
Fix 1: Disabling The Self Defense Module
Avast self-defense module prevents any internal or external program from shutting down. So, you need to deactivate the Avast self-defense module.
Locate the Avast Antivirus application.
Open the user interface and hit the Settings option.
Cross-check if you are in the General section.
Click Troubleshooting and then uncheck the Enable Avast Self-Defense Module option.
Once the appropriate changes are made, click the OK button.
Finally, restart your computer.
Fix 2: Use The Task Manager To End Unwanted Tasks:
Task Manager is a life savior when it comes to stopping unwanted programs immediately. Just follow the below steps.
Open the Task Manager window (Ctrl + Alt + Del).
Locate and select instup.exe or right-click on it and click on End task.
After this, it will ask you to update the Avast Antivirus.
If the above step does not work for you, try out the below troubleshooting methods.
Fix 3: Repair The Avast Antivirus Program:
You can use the Windows repair tool to fix the Avast antivirus error code. Follow the below steps.
Go to the Start menu.
Type Control Panel and hit Enter.
Land on the Control Panel window.
By clicking on the top right corner, change the view to Category.
Find and click Uninstall a program (it’s below Programs).
Scroll down and click Avast Antivirus from the list of programs.
Right-click on the Avast program and click on the Repair option from the list.
The above step might solve the issue.
Fix 4: Remove The Corrupted Files:
Sometimes, Avast Antivirus software gets some of its own files corrupted. It is always a good tradition to check for corrupted data, files, and extensions timely and clear the clutter.
Press the Windows + R keys to open the Run dialog box.
Type CMD (Command) and hit the Enter key.
Type “chkdsk c: /f” and press the Enter key.
The above command will find out the corrupted files on your PC and will remove them.
Fix 5: Reinstalling The Avast Software:
If the above troubleshooting methods don’t work for you, uninstalling and installing Avast is the only option left. Do check out the below steps.
Open the Start menu.
Search for Control Panel.
Land on the Control Panel window.
Change the view as Category.
Locate the Avast Antivirus program from the list.
Select and click Uninstall.
Once it is removed completely, Windows will ask you to restart the system.
After restarting, go to the default web browser.
Open the official Avast website.
Download the latest Avast application on your PC.
Once Avast software gets downloaded, follow the on-screen instructions to install the same on your computer.
We hope that any of the above troubleshooting methods or steps would have worked out for you. If not, let us know by calling our technicians. We are available 24 x7 to help you fix the “Avast setup is already running” error.
