After naming my computer an error named: 0x90000000 popped up! What should i do?

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Posted 3 years ago

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I'm sorry for the late reply. This error message appears when trying to activate Trend Micro Security using a multi-user serial number that has reached the total number of seat capacity or if the serial number is incorrect.

I've checked your account information and only 2 of 6 available seats are used, so I assume you may use a wrong serial number to activate.

Please try below steps to verify if your serial number is correct:

  1.  Click the Trend Micro Security icon in the system tray at the bottom right of the screen.
  2.  Select Check for Program Updates.
  3.  Verify if the serial number is correct.
     If the serial number is incorrect, click on the serial number and then type the correct one.
  4.  Try activating Trend Micro Security again.
Please let us know how it goes! If the problem persists, please send us a screenshot of the error you're seeing. Here's a support page for your reference: Taking a screenshot to send to Trend Micro Technical Support

Trend Micro Home Users Community

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