Unable to Install Update Error in Trend Micro Security on Windows

LAST UPDATED: OCT 18, 2024

You see this message when you update your Trend Micro program:

"Unable to install the update. Please try again."

Why Did This Happen?

Your computer may have a corrupted Trend Micro update file or a conflicting third-party security software.

How Do I Fix This?

Follow the steps below to apply a quick hotfix:

1. Initiate the hotfix download by clicking the link below:
   Ti_1780_win_en_for_UMH_1166_later_hfb0002.exe
2. Run the downloaded file Ti_1780_win_en_for_UMH_1166_later_hfb0002.exe
   by double-clicking it.
3. Grant permission by clicking Yes in the User Account Control window.
4. Complete the installation by following the on-screen instructions.
5. Restart your device to apply changes.
6. Try updating your Trend Micro program again.

Still seeing the same error message? Delete the corrupted update file using these steps:

1. On your keyboard, press the Windows ⊞ + R keys at the same time.
2. In the Open field, type supporttool.exe, then click OK. The Trend Micro Diagnostic Toolkit should open.
3. Click (C) Uninstall tab.
4. Click 2. Delete Now. This will delete the broken update file.
5. Click Close.
6. Update the program again.

If the error still appears after doing the steps above, remove any conflicting software on your computer.