Fix "Unable to Activate" error from Trend Micro in Google Chrome

LAST UPDATED: MAY 24, 2024

You see this error while activating the Google Chrome extension:

You may have used a full serial number, which seats are already used up, when activating the extension.

Free up a seat through your Trend Micro Account:

Go to https://account.trendmicro.com.
Sign in with your email address and password.
Look for the serial number you used.
Click the X icon located on the upper-right corner of the device you wish to remove protection.
Click Yes to confirm the removal.
You can now use this again to activate your extension.

Contact Best Buy Geek Squad to check your subscriptions or buy additional licenses.

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