Avast Antivirus: Troubleshooting when Avast Antivirus shows the 'UI Failed to load' error

Issue

In some cases, Avast Antivirus reports that UI Failed to load which stops the whole program from running. This issue may be a result of the incorrect Windows services configuration.

If clicking Restart services on the error message does not help, you need to set the relevant Windows services to run automatically by following the steps in this article.

Solution

Follow these steps according to your operating system:

Before you begin, make sure you are logged in to Windows as a user with administrator permissions.
  1. Press Win + R to run the Windows Services console, then type services.msc and click OK.
  2. In the Services console, locate and right-click Remote Desktop Services and select Properties.
  3. In the General tab, click the drop-down menu next to Startup type and select Automatic. Then click Apply to confirm changes.
  4. If the service stops running, click Start in the Service status section.
  5. Restart your PC and try to open Avast Antivirus again.
  1. Press Win + R to run the Windows Services console, then type services.msc and click OK.
  2. In the Services console, locate and right-click Remote Desktop Services and select Properties.
  3. In the General tab, click the drop-down menu next to Startup type and select Automatic. Then click Apply to confirm changes.
  4. If the service stops running, click Start in the Service status section.
  5. Restart your PC and try to open Avast Antivirus again.
  1. Press Win + R to run the Windows Services console, then type services.msc and click OK.
  2. In the Services console, locate and right-click Remote Desktop Services and select Properties.
  3. In the General tab, click the drop-down menu next to Startup type and select Automatic. Then click Apply to confirm changes.
  4. If the service stops running, click Start in the Service status section.
  5. Restart your PC and try to open Avast Antivirus again.
  1. Press Win + R to run the Windows Services console, then type services.msc and click OK.
  2. In the Services console, locate and right-click Terminal server (or Services Terminal Server) and select Properties.
  3. In the General tab, click the drop-down menu next to Startup type and select Automatic. Then click Apply to confirm changes.
  4. If the service stops running, click Start in the Service status section.
  5. In the Services console, locate and right-click Background Intelligent Transfer Services and select Properties.
  6. In the General tab, click the drop-down menu next to Startup type and select Automatic. Then click Apply to confirm changes.
  7. If the service stops running, click Start in the Service status section.
  8. Restart your PC and try to open Avast Antivirus again.
  1. Click the Windows Start button and select Run.
  2. Type services.msc and click OK.
  3. In the Services console, locate and right-click Terminal server (or Services Terminal Server) and select Properties.
  4. In the General tab, click the drop-down menu next to Startup type and select Automatic. Then click Apply to confirm changes.
  5. If the service stops running, click Start in the Service status section.
  6. In the Services console, locate and right-click Background Intelligent Transfer Services and select Properties.
  7. In the General tab, click the drop-down menu next to Startup type and select Automatic. Then click Apply to confirm changes.
  8. If the service stops running, click Start in the Service status section.
  9. Restart your PC and try to open Avast Antivirus again.

The Avast Antivirus user interface should be loaded now.

Further recommendations

If after performing all the steps from the instruction above the issue still persists, it is recommended to uninstall Avast. For more information read the following articles:

  • Avast Premier 17.x
  • Avast Internet Security 17.x
  • Avast Pro Antivirus 17.x
  • Avast Free Antivirus 17.x
  • Microsoft Windows 10 Home / Pro / Enterprise / Education
  • Microsoft Windows 8.1 / Pro /Enterprise
  • Microsoft Windows 8 / Pro / Enterprise
  • Microsoft Windows 7 Home Basic / Home Premium / Professional / Enterprise / Ultimate
  • Microsoft Windows Vista Home Basic / Home Premium / Business / Enterprise / Ultimate
  • Microsoft Windows XP Home / Professional / Media Center Edition

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