How To Fix Avast Antivirus Error 42017

Avast antivirus is rated as one of the best antivirus programs present in the security world. The Avast antivirus software is so efficient when it comes to removing harmful elements like malware, spyware, Trojans, and other virtual attacks. In the world we live in, there is some additional technological advancement that is done every second; we never know how the application will turn out to be. It does have some positive and negative aspects. We are going to deal with one such issue with the Avast antivirus. On this page, you are going to read about the Avast antivirus error 42017.

Error Code Information

Step 1:Error code: 42017
Step 2:Error meaning: AVAST_INVALIDLICENSE [License string is not valid]

In this article, you will be reading the steps to resolve the Avast antivirus error code 42017. The following methods are for Windows users only. Here we go.

Method 1: Repair Avast Antivirus

The best solution to fix the issue is to repair the Avast antivirus product itself. Here are the steps.

Step 1: Click the Windows icon on your computer.
Step 2: When a list opens, select the Apps and Features option.

Step 3: The Apps and Features window will now open.
Step 4: On the right of the Apps and Features window, scroll down the list of apps and select the Avast antivirus program.

Step 5: Click the Uninstall button.
Step 6: When the permission pop-up window opens, click the Yes button to confirm.

Step 7: The Avast Wizard will now open.
Step 8: Click the REPAIR button.

Step 9: The setup wizard will now repair the product.
Step 10: Once the repair is complete, click the DONE button.

Restart your computer, and you will no longer face the Avast antivirus error 42017.

Method 2: Close Background Applications

There are programs that will create a conflict when Avast antivirus is open and running. The best way to solve the error code is to close the unwanted background applications.

Step 1: Press the Ctrl + Alt + Del buttons at the same time.
Step 2: You will see different options.
Step 3: At the end, click the Task Manager option.
Step 4: Select the background applications you want to close.
Step 5: Click the End task button (one application at a time).

You will be free from the Avast antivirus error code 42017.

Method 3: Update Windows

Step 1: Click the Windows (Start) icon.
Step 2: Click the Settings (gear icon) option from the left section of the menu.
Step 3: Select the option Update & Settings on the left pane and navigate to the Windows Update section.

Step 4: Click the Check for Updates button.
Step 5: Once Windows is updated, check if the error code pops up again. If it does, just move on to the next method.

Method 4: Uninstall Programs That Are Unwanted

There are certain applications on your computer that can cause a massive conflict with the antivirus. This problem is common with Windows 10 users. Here are the steps to uninstall unwanted programs.

Step 1: Click the search bar on your desktop screen.

Step 2: Type Settings and click the Settings search result.

Step 3: The Settings window will open.

Step 4: Under Apps, click the Uninstall a Program button.

Step 5: Select the program you want to uninstall.

Step 6: Do a right-click on the program and click the Uninstall button.

Follow the steps as described in this article. You will no longer face the Avast antivirus error 42017. If the issue persists, click the CALL button. Our technical team will be happy to assist you in this regard.