The Windows Club

Fix Avast Antivirus Error 42110 and 42125 in Windows 11/10

The Avast Antivirus error 42110 or 42125 It has been known to occur on Windows 11 or Windows 10 when computer users try to perform a boot scan using Avast on their devices. In this post, we provide the most appropriate solutions that affected users can apply to fix the error.

When this issue occurs on your Windows machine, you will receive the following error message corresponding with the respective accompanying code;

Error 42110 Avast Error 42110
Error 42110: avast! Your antivirus has encountered a problem and needs to be closed.
We are sorry for the inconvenience.

Error 42125 Avast! Antivirus Error 42125

You are likely to encounter any of the error codes due to the following reasons;

  • Decompression bomb (also known as pressure bomb or pressurized bomb) problem
  • Software conflict
  • installation issue
  • Corrupted or missing Avast files
  • Avast Anti-Malware has expired
  • Unstable or bad network connection
  • File corruption in system restore volume

Avast Antivirus Error 42110 and 42125

if it was Avast Antivirus Error 42110 and 42125 Happened on your Windows 11/10 PC, you can try the recommended solutions below in no particular order to fix the error on your system right away.

  1. Update avast
  2. Run an SFC scan
  3. Check and solve the decompression bomb problem
  4. Uninstall any other security software (if applicable)
  5. Disable and re-enable System Restore
  6. Repair / Reinstall Avast

Let’s look at a description of the process involved in relation to each of the solutions listed

1]Avast update

It might be a file Avast Antivirus Error 42110 and 42125 What happened on your Windows 11/10 PC might be due to the security software not being updated. In this case, to rule out this possibility as a possible culprit, you can update Avast.

To update Avast to the latest version/build, do the following:

  • Launch the Avast application.
  • In the application interface, tap work list from the upper right corner.
  • Next, select Settings from the left side.
  • Go to public tab.
  • Click Update.
  • Next, tap Check for updates inside Update sub tab.

Avast will now download and install the latest version automatically. Wait some time for the process to complete.

  • Restart Avast when prompted.

Now, try to run the boot scan and see if the error code is triggered again. If so, try the next solution.

2]Run an SFC scan

Run an SFC scan

System file corruption is also one of the possible culprits that can prevent Avast from performing a malware scan. In that case, you can run an SFC scan and see if that helps. Similarly, if there is an error in the registry files related to Avast, you may encounter a problem with the Avast registry file. In that case, you can repair the entire registry and see if that helps.

3]Check and solve the decompression bomb problem

Check and solve the decompression bomb problem

For most affected users, the most common reason for the errors in focus is that Avast believes it is dealing with a file that, when loaded, could cause a DoS attack. The file in question is commonly referred to as a “decompression bomb” – a term referring to chronic documents (RAR or ZIP) with a high compression rate. Upon extraction, these documents can become quite large and take up entire disk space and system memory as well. These “decompression bombs” are frequently used in DoS attacks by threat actors with the goal of weakening and disabling virus scanners; But since the majority of security tools can detect this practice, security software will not scan the archive to avoid system crashes or make it more vulnerable to attacks.

So, if this is the case for you, the best way to solve the problem you are currently experiencing is to simply delete the file and start another Avast boot time check at the next system startup. If you still need the file you deleted, you can try downloading it from a trusted source.

4]Uninstall any other security software (if applicable)

Software conflicts assuming you have security software other than Avast installed and running on your Windows 11/10 machine can lead to highlight errors. In this case, you can remove any third-party antivirus software from your computer using the dedicated AV removal tool to remove all files associated with that antivirus.

5]Disable and re-enable System Restore

Disable and re-enable System Restore

This solution worked for some affected users who reported errors, and it appears that some type of system file corruption is related to the system restore volume. In this case, they were able to solve the problem by disabling System Restore, then restarting the Windows 11/10 PC and, at boot, re-enable System Restore. After that, Avast boot scan completed successfully without problems.

6]Repair / Reinstall Avast

If nothing has worked so far to solve the problem, you can first fix Avast; And if that doesn’t help, you can simply uninstall Avast and then download the web installer or the offline installer and reinstall the latest version of Avast on your system.

To fix Avast, do the following:

  • Launch the Avast application.
  • Click work list in the upper right corner.
  • Choose Settings.
  • Go to public tab.
  • Click find the mistakes and resolve it From the list of submenu items.
  • In the right pane, scroll down to File Still having problems Section.
  • Click on fix application button.
  • Click yes at the confirmation prompt and wait for the initial scan to complete.
  • Finally, tap solve everything On the next screen to fix all specific potential problems related to Avast.
  • Restart your computer when finished.

Alternatively, you can repair Avast via the Settings app or via the Programs and Features program in Control Panel.

I hope this helps you!

Related post: Fix Avast Update Helper Bugs 1316, 1638, and 1603

How can I fix error 42125 Corrupted zip archive?

To fix error 42125 zip archive corrupted on Windows 11/10 PC, try the following suggestions:

  • Delete unwanted files from the system.
  • Check the hard disk for errors.
  • Update your device driver.
  • Perform a system check.
  • Update Windows to the latest version.
  • Reinstall Avast.

What is the bomb decompress file?

Compression bomb or zip bomb is a malicious archive file that contains a lot of redundant data that can crash the program that is reading it. Also known as “zip of death”, the zip bomb is often used to render antivirus software useless, so that conventional viruses can enter the system.

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