Avast Stuck on Installing Additional Definitions: Fixed in 3 Ways

Try these simple fixes if Avast installs additional definitions

4 min. read

Updated onOctober 4, 2023

updated onOctober 4, 2023

Share this article

Improve this guide

Read our disclosure page to find out how can you help Windows Report sustain the editorial teamRead more

Key notes

Avast is one of the best antivirus software in the tech world. It has many users who enjoy its latest updates and features. However, users complain about getting stuck when Avast is installing additional definitions, causing problems for them.

Moreso, users report thatAvast is not updating the virus definitions, resulting in issues with the antivirus.

Why is Avast stuck on installing additional definitions?

Avast stuck on installing additional definitions indicates that the software can’tinstall update virus definitionsfor some reason. It can cause security breaches and other issues on your PC because the software can’t access the definitions needed.

However, some factors can cause the Avast antivirus software to be stuck on installing additional definitions. Some are:

There are lots of other factors that may cause the problem on Avast. Fortunately, there are some general fixes to help you get the issue resolved.

What can I do if Avast is stuck on installing additional definitions?

Before proceeding with any advanced troubleshooting, try the following:

If you’re not able to fix the error, proceed with the detailed solutions below.

1. Disable Windows Firewall

Disabling the Windows Defender Firewallcan resolve any conflict between the service and Avast.

2. Update the Avast app

Running Avast as an administrator will fix any permissions issues preventing it from installing the definitions.

3. Uninstall the Avast antivirus with Utility

The uninstall tool willuninstall the Avast appand clear any residue files on your PC. Also, reinstalling the Avast software allows you to install the latest version.

Alternatively, our readers can read ourin-depth comparison of Windows Defender and Avast antivirusto know which is the most preferred.

Likewise, you can read our guide onhow to fix Avast antivirus not openingon Windows 11.

If you have further questions, kindly drop them in the comments section below.

Avast Stuck on Installing Additional Definitions: Fixed in 3 Ways#

Why is Avast stuck on installing additional definitions?#

What can I do if Avast is stuck on installing additional definitions?#

1. Disable Windows Firewall#

2. Update the Avast app#

3. Uninstall the Avast antivirus with Utility#