Fixing Avast Anti Virus 42110 Error on Windows 10

  • Some Windows users encounter “Avast Anti Virus Error 42110” error when trying to run the startup filter with Avast.
  • This problem occurs during scanning on boot, and it has been confirmed to occur in Windows 7, Windows 8.1, and Windows 10.

In spite of the fact that Avast is a great antivirus, many customers have encountered billing problems with the software, which frustrates them. If that doesn’t work, then contact their customer service service. To solve Avast billing issues, visit their billing tab and follow the instructions.

This problem occurs during boot scanning for Windows 7, Windows 8, and Windows 10. Users encounter the error “Avast Anti Virus Error 42110” when running Avast’s startup filter.

Avast Anti Virus 42110 errors on Windows 10 are caused by two major drivers, for unknown reasons:

It is most commonly caused by Avast thinking it is handling a file that can cause a DoS attack when uploaded. That is known as the “decompression bomb.” If that is the case, you should avoid the entry and look for similar information elsewhere.

Avast damage occurs regularly due to incorrect or missing Avast Software program installation or execution files. The best way to resolve this problem is to remove the software from your system and reinstall the latest version. 

Typically, Avast confuses a document with a compression bomb (also known as a decompression bomb) causing this error message.

The steps to fix Avast Antivirus Error code 42110 can be found at . You can easily fix Avast Antivirus Error code 42110 by calling 1-888-909-0535 Avast Customer Support Service Number or by visiting

It is an expression used to refer to chronic documents that have high compression rates (RAR or ZIP). Upon separation, these documents can become extremely large and end up taking up the entire disk space.

Most security devices do not filter chronicles because they know decompression bombs are used often in DoS attacks in order to weaken infection scanners.

What causes Avast Anti Virus 42110 error in Windows 10?

What causes Avast Anti Virus 42110 error in Windows 10?

  • Conflicts between software
  • Problems with installation
  • The Avast files have been damaged or are missing
  • An expiration date has been set for Avast Anti-Malware
  • It was difficult to connect to the network

There is a possibility that the internet is causing your computer to gather unwanted files from its web browser, if you have it installed. The problem is that unwanted files must be deleted in a timely manner in order to avoid error 42110. Deleting unwanted files is not the answer to your problem. Your system will be damaged or its speed will be significantly slowed down if unwanted files are not removed in time.

Error 42110 may be caused by old Avast antivirus software. Therefore, update the Avast antivirus software on your system as soon as possible.

How to fix Avast Anti Virus 42110 error in Windows 10

How to fix Avast Anti Virus 42110 error in Windows 10

Run the system file checker

If you encounter Avast 42110 error due to a corrupted system file, follow the steps below to fix the corrupted file and fix Avast 42110 error.

  1. The command line can be found at the bottom of the list when you type Cortana in the search bar.
  2. You need to open the administrator console by right-clicking the application.
  3. Once you have entered the correct credentials, check your account.
  4. You can successfully execute the command by typing “sfc /scannow” and pressing “Enter”.
  5. A system file error will be detected by running the program.
  6. In addition, those files will be restored as necessary.
  7. In the end, close the command line window and check whether Avast is working. If it does not, close the command line window again.

Reinstalling Avast Software

Often, this issue is caused by incorrectly installed or missing executable files, in which case it is best to uninstall and reinstall the latest version of Avast.

  1. First, select Programs and Features from the Control Panel.
  2. Go to the “Features” section and click on “Uninstall Program”.
  3. The executable file for Avast Antivirus can be found by right-clicking the local files for the program.
  4. By clicking Yes in the dialog box that appears, uninstall the software from the context menu.
  5. The uninstallation process can be completed by following the instructions displayed on the screen.
  6. If you have uninstalled Avast, you can visit the official website of the company after you have done so.
  7. You can fix Avast 42110 error quickly by downloading and installing the latest update for Avast.

A technical expert can provide a trouble-free solution to the Avast bug using this method.

Restore the registry files related to Avast

Avast registry file errors may occur if you have a problem with the registry files. Therefore, follow these steps if any code is missing from the registry editor:

  1. Press Enter to open the Registry window after typing “Regedit” into the Cortana search bar.
  2. You can now click the File menu to edit the error key 42110 in the registry editor window.
  3. Select Export from the dropdown list, then select Save To from the Save To list to save the antivirus file data to a location.
  4. The Selected branch option should be enabled and the file name should be appropriate.
  5. Once the file is saved, close the window and save it with the extension “.reg.”.
  6. Ensure that the Avast data has been saved, then follow the on-screen instructions to restore it successfully.

Updating Avast

The latest version of Avast is essential for Avast to perform scanning; a previous version might prevent Avast from scanning.

  1. You can open Avast by double clicking on its icon.
  2. Go to the left pane and click on Settings.
  3. On the same page, click Check for Updates under the Updates section.
  4. The online update process will begin when you select the Live Updates option.
  5. A message will appear on the screen saying “Software updated successfully” after a few minutes.
  6. To check if the Avast 42110 bug has been fixed, scan your system with the latest Avast software.

Avast antivirus slowdown is also solved with this solution.

Remove malware and other protection software

If your system still does not work properly after removing unnecessary files and protection programs, then try reinstalling Avast.

  1. In Cortana, type “Appwiz.CPL” and choose the problematic program.
  2. If your computer has more than one antivirus app, look for other security programs.
  3. Remove them one by one by right-clicking on them and selecting Uninstall.
  4. If Avast displays an annoying message while scanning your system, reboot your system and run it again.

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Mark Ginter is a tech blogger with a passion for all things gadgets and gizmos. A self-proclaimed "geek", Mark has been blogging about technology for over 15 years. His blog,, covers a wide range of topics including new product releases, industry news, and tips and tricks for getting the most out of your devices. If you're looking for someone who can keep you up-to-date with all the latest tech news and developments, then be sure to follow him over at Microsoft.