Avast Cleanup Premium is an optimization tool that includes a range of scans designed to detect unnecessary items and performance issues. These scans help free up disk space and improve your system's speed.

Scan your Windows device

To scan your Windows device for the first time using Avast Cleanup:

1. Open Avast One, hover your cursor over the side menu and select Cleanup.
2. Click Scan now to perform a general scan.

The scan results are shown on the main dashboard. To perform subsequent general scans:

1. Open Avast Cleanup Premium and click Rescan.
2. When the scan is complete, follow the instructions for each found issue.

The general scan looks for junk items that can be cleaned and ways to improve system performance. For detailed instructions about each category, refer to the sections below.

Free up disk space

Avast Cleanup Premium scans for and safely deletes system junk and web browser data to free up disk space.

1. Open Avast One, hover your cursor over the side menu and select Cleanup.
2. There are four features that can help you free up disk space: Browser Cleaner, Broken Shortcuts, Broken Registry Keys, and Disk Cleaner. Select the category that you want to clean, such as Disk Cleaner.
3. Choose your preferred Cleaning mode.
   When you clean your browsers, if you select the Full mode, Browser Cleaner will delete the auto-fill data saved in your selected browsers.
   
4. Click Clean.
   If you are cleaning your browsers and your browsers are open, close them, then click Continue.
   
5. When cleaning is complete, click Back to Dashboard or Keep cleaning.

The selected file categories are now cleaned.

Enable Auto-Clean

Auto-Clean runs silently in the background with no actions required from you and frees up space on your Windows device by removing dispensable items, such as broken shortcuts and registry items.

To enable Auto-Clean:

1. Open Avast One, hover your cursor over the side menu and select Settings ▸ Cleanup Premium.
2. Select Auto-Clean.
3. Click the red (OFF) slider so that it changes to green (ON).
4. Optionally, use the menu to specify the frequency of scans.
5. Optionally, select the file types you want Avast Cleanup Premium to remove during automatic cleaning. The file types that Avast ticks automatically are safe to clean without losing crucial data.

Auto-Clean is now enabled.

Manage applications

Avast Cleanup Premium scans your Windows device for outdated or unused applications, then allows you to easily update, sleep, or uninstall them. This helps ensure that your applications are running optimally and frees up resources on your Windows device.

Put applications to sleep

Certain applications slow down your system by running silently in the background. Avast Cleanup Premium scans for these applications, then allows you to safely put them to sleep and boost performance.

1. Open Avast One, hover your cursor over the side menu and select Cleanup.
2. Select Sleep Mode ▸ Scan now.
3. The Sleep Mode screen shows applications that are running unnecessarily in the background and slowing down your Windows device. To put an application to sleep, click the green (ON) slider next to an application, so that it changes to red (OFF).

The selected applications are now sleeping. You can open and use sleeping applications as normal. After you close the application, Avast Cleanup Premium automatically returns its status to sleeping.

To turn on a sleeping application, click the red (OFF) slider next to an application so that it changes to green (ON).

Preview app removal

Avast Cleanup can provide a secure simulated environment to practice removing software, without the risk of losing essential programs. To simulate uninstalling an app, refer to the steps below:

1. Open Avast One, hover your cursor over the side menu and select Cleanup.
2. Select Uninstall Simulator.
3. Choose an application you want to preview uninstalling, and click Simulate.

A secure simulated environment is created to help you check the effect of removing the app from your Windows device.

Click Restore next to an application to restore it.

Uninstall unused applications

1. Open Avast One, hover your cursor over the side menu and select Cleanup.
2. Select App Uninstaller.
3. Choose an application you want to uninstall, and click Uninstall.
4. Select Uninstall to confirm the unistallation of the application.

The application is now uninstalled.

Update applications

1. Open Avast One, hover your cursor over the side menu and select Cleanup.
2. Select Software Updater.
3. Find the application you want to update, and click Update.

The application is now updated.

Undo changes

Undo Center helps you to review and undo recent changes made by Avast Cleanup:

1. Open Avast One, hover your cursor over the side menu and select Cleanup.
2. Select Undo Center.
3. Click the drop-down arrow beside the date a backup was made.
4. Click Undo next to changes you wish to reverse.

The changes are now reversed.

Updated on: 15/09/2025