“Too Many Installations” error message appears when activating your Trend Micro Security software

You receive the following error message/s when you activate your Trend Micro program:

"Too Many Installations.

You may only activate this software on a limited number of computers. Because you have reached that limit, you must either stop protecting another computer, or buy another subscription."

This happens when there are no available license seats left for your program. The license seat is used when you:

  • Installed the program on your computer or other computers
  • Installed the program on the same computer more than once
  • Reinstalled the program on the same computer after reformatting its hard drive
  • Upgraded the program on the same computer where an old version was previously installed
  • Installed and activated any of the following bundled programs using your Trend Micro Security Serial Number:
    • Antivirus for Mac
    • Mobile Security for iOS
    • Mobile Security for Android

Your Trend Micro Security subscription has different license seats:

  • Premium Security = 6 seats
  • Maximum Security = up to 5 seats
  • Internet Security = 3 seats
  • Antivirus+ Security = 1 seat
Note: If you have multiple computers, you can do any of the following:
  • Buy additional protection by clicking Make another purchase on the too many installations window.
  • Manage your license seats by accessing your Trend Micro Account.

To resolve the issue, select the applicable scenario below:

To transfer protection to your current computer through the Too Many Installations page, follow the steps below:

  1. In the Password field, type your Trend Micro Account password, then click Next.

    Too Many Installations

    Note: If you forgot your password and cannot access the registered email address, refer to this Knowledge Base article: Unable to sign in to your Trend Micro Account.
  2. Select the computer or device, where the program was previously activated, that you want to replace.

    Transfer Protection

  3. Provide a computer name, then click Next.

    Example: "Home Computer"  or "Office Computer".

    Name your Computer

    A confirmation window will appear.

    Protection Activated

  4. Click Finish.You have now activated the protection on your computer.

To transfer protection using Trend Micro account, do the following:

  1. Open the Trend Micro Account website.
  2. Type your Trend Micro Account email address and password, then click Sign In.

    My Account Page

  3. Look for your product from the list.
  4. Click the X icon next to the device/computer you wish to delete.

    X Button MyAccount Maximum Security

    Note: If you are unable to find the X icon, proceed to step 6 instead.
  5. Click Disable Now  to confirm the removal.

    Disable Protection

    The device/computer will be removed from your account and you can now install your Trend Micro program on your new device/computer.

    Not yet installed vacant seat

  6. Click the Download button that corresponds to the program that you need to install.
  7. Double click the installer when the download finishes.

    Select your program version for the detailed steps how to install:


To activate another serial number, follow the steps below:

  1. Close the Too Many Installations window by clicking on the X button on the upper-right corner.
  2. Open the main console of your Trend Micro security. Do either of the following:
    • Double-click the Trend Micro icon on your desktop.
    • Double-click the Trend Micro icon on your system tray.
  3. A Not Yet Activated window will appear, then click on Activate Now.

    Not yet activated

    A confirmation window will appear.

  4. Type the name of your computer, then click Next.

    Enter a computer name

  5. Click Finish. You have now activated the protection on your computer.

    Protection Activated

Need additional help?
Our Support Team is ready to help you with your concerns.
Applies To: Antivirus+ Security - 2017, Antivirus+ Security - 2018;Internet Security - 2017;2018;Maximum Security - 2017;Maximum Security - 2018;Premium Security - 2017;Premium Security - 2018;

Last Updated: Sep. 11, 2017 9:36 PM (PST)
Solution ID: 1059026