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You see this error message when logging in to your Trend Micro Account:

Disallowed Key Characters

Why did this happen?

The browser you are using may have saved a cookie with unicode characters.

What should I do next?

  1. Clear the browser cache from the web browser that you see this error message.
  2. Restart the affected web browser.
  3. Sign in to your Trend Micro Account again.
Keywords: disallowed key characters
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