The Avast Setup wizard enables you to update, modify, repair, or uninstall Avast Antivirus.
Access the Avast Setup wizard
- Right-click the Windows
Start button and select Apps and Features from the menu that appears.
- Ensure that Apps & Features is selected in the left panel, then click your version of Avast Antivirus, and select Modify.
- Press the
WinXkey simultaneously, then select Programs and Features from the menu that appears.
- Right-click your version of Avast Antivirus, then select Change from the drop-down menu.
- Click the Windows
Start button and select Control Panel.
- Under Programs, click Uninstall a program if you are using the default category view,
...or click Programs and Features if you are using the large/small icons view.
- Right-click your version of Avast Antivirus, then select Change from the drop-down menu.
- Click the Windows
Start button and select Control Panel,
...or select Settings ▸ Control Panel if you are using the classic Start menu.
- Under Programs, click Uninstall a program if you are using the default category view,
...or double-click Programs and Features if you are using the classic view.
- Right-click your version of Avast Antivirus, then select Change from the drop-down menu.
- Click the Windows
Start button and select Control Panel,
...or select Settings ▸ Control Panel if you are using the classic Start menu.
- Click Add or Remove Programs if you are using the category view,
...or double-click Add or Remove Programs if you are using the classic view.
- Select your version of Avast Antivirus by clicking it once, then click Change in the bottom-right corner of the highlighted selection.
- If prompted by the User Account Control dialog for permissions, click YesContinue.
- When the Avast Setup wizard appears, click your preferred action:
- Update: checks for and applies any updates to your program version and virus definitions.
- Repair: checks all Avast program data and reloads any that is damaged or missing.
- Modify: enables you to add or remove program components.
- Uninstall: uninstalls the program.
If you are using a trial version of a paid Avast Antivirus product or your paid license is close to expiration, you can also Switch Back to Avast Free Antivirus to convert your paid version of Avast Antivirus to Avast Free Antivirus.
- Avast Ultimate 18.x
- Avast Premier 18.x
- Avast Internet Security 18.x
- Avast Pro Antivirus 18.x
- Avast Free Antivirus 18.x
- Microsoft Windows 10 Home / Pro / Enterprise / Education - 32 / 64-bit
- Microsoft Windows 8.1 / Pro / Enterprise - 32 / 64-bit
- Microsoft Windows 8 / Pro / Enterprise - 32 / 64-bit
- Microsoft Windows 7 Home Basic / Home Premium / Professional / Enterprise / Ultimate - Service Pack 1, 32 / 64-bit
- Microsoft Windows Vista Home Basic / Home Premium / Business / Enterprise / Ultimate - Service Pack 2, 32 / 64-bit
- Microsoft Windows XP Home / Professional / Media Center Edition - Service Pack 3, 32-bit