Troubleshooting the "UI Failed to load" error message in Avast Antivirus

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.

Instructions

Before you begin, make sure you are logged in to Windows as a user with administrator permissions.
  1. Simultaneously press the Win and R keys on your keyboard 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.
    If the service stops running, click Start in the Service status section.
  4. Restart your PC and try to open Avast Antivirus again.
  1. Simultaneously press the Win and R keys on your keyboard 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.
    If the service stops running, click Start in the Service status section.
  4. Restart your PC and try to open Avast Antivirus again.
  1. Simultaneously press the Win and R keys on your keyboard 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.
    If the service stops running, click Start in the Service status section.
  4. Restart your PC and try to open Avast Antivirus again.
  1. Simultaneously press the Win and R keys on your keyboard 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.
    If the service stops running, click Start in the Service status section.
  4. In the Services console, locate and right-click Background Intelligent Transfer Services and select Properties.
  5. In the General tab, click the drop-down menu next to Startup type and select Automatic. Then click Apply to confirm changes.
    If the service stops running, click Start in the Service status section.
  6. 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.
    If the service stops running, click Start in the Service status section.
  8. 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 reinstall Avast Antivirus.

  1. Refer to the following article for uninstallation instructions:
  2. After Avast Antivirus is completely removed from your PC, refer to the relevant article for installation instructions:
  • Avast Ultimate 17.x
  • 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 - 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

Need additional help?

Contact us
Avast Total Care

Your premium tech support for PCs, printers & more

Call now for a free consultation and subscribe! 1-844-340-9251
devices Get help for all your device problems 24x7
1-844-340-9251