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

"Unable to update your protection"

What Happened?

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

How To Fix it

Delete the corrupted update file:

  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.

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