Cannot Open Trend Micro on Windows: How To Fix

If you find that you cannot open the Trend Micro Security such as Maximum Security, Internet Security, or Antivirus+ Security on your Windows computer, follow these steps to resolve the issue.

For other products like Apex One, Worry-Free Business Security Services, and more, visit the Trend Micro Business Success Portal.

Why can't I open Trend Micro?

This issue may occur due to conflicts with new software installations or a recent Windows update affecting Trend Micro components.

How can I fix this problem?

Restart the Trend Micro program using the following steps:

1. Press the Windows ⊞ and R keys on your keyboard simultaneously to open the "Run" window.
2. Type supporttool.exe in the 'Open' field, then click OK.
3. Click Yes when the "User Account Control" window appears.
4. The "Trend Micro Diagnostic Toolkit" will open. Navigate to the (C) Uninstall tab.
5. Click 5. Stop all components. Wait for the Trend Micro icon in the taskbar notification area to disappear (about 10-30 seconds).
6. Then click 4. Start all components to restart them.
7. Try opening the Trend Micro program again.

See also

• Trend Micro Crashes During Updates: How to Fix
• How to Change Your Trend Micro Account Password
• How to change Trend Micro program password on Windows
• Where to Find Your Trend Micro Subscription Renewal & Expiry Date