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EthoVision XT 19 - Software Installation - Deactivate an EthoVision XT License

Last updated: Jul 28, 2026

Deactivate an EthoVision XT License

Aim

To deactivate a license, either to end the license agreement or to transfer the license to another computer. For example, if you have purchased a new computer and would like to transfer your EthoVision XT license from the old to the new computer.

Prerequisites

  • EthoVision XT is running, and no experiment is open.
  • The EthoVision XT computer is connected to the internet, or you have a smartphone connected to the internet.

What Do You Want to Do?

  • Deactivate a computer-locked license
  • Deactivate a floating license

See Types of EthoVision XT License.

Deactivate a Computer-Locked License

  1. If an experiment is open in EthoVision XT, close it (File > Close).
  2. Choose Help > Deactivate License.
  3. Choose Computer-locked and click Continue.
  4. Select one of the options depending on whether your EthoVision XT computer is connected to the internet:
    • Deactivate online. Do this if your EthoVision XT computer is connected to the internet. Select this option and click OK.
    • Deactivate offline. If your computer is not connected to the internet, you need a smartphone connected to the internet that can scan a QR code. (1) Select this option and click OK. (2) A QR code appears on the screen. (3) Scan this code using a smartphone and follow the link within 24 hours. (4) Click Deactivate on the screen that appears in your browser.
  5. EthoVision XT shows a message that the license has been deactivated and closes.

Notes

  • If your smartphone is not connected to the internet, leave the link open, go to a place where your smartphone is connected to the internet, and open the linked page.
  • When you click Deactivate offline, your license is deactivated on your computer, but not yet on the Noldus Server. For this second step you must scan the QR code, follow the associated link, and click Deactivate in a web browser on your smartphone. Do this within 24 hours.

Deactivate a Floating License

Deactivate a floating license when you need to transfer that license to another computer. Note that when you have floating licenses, in order to be able to work on one computer you just need to close EthoVision XT on the other computer(s). You do not need to deactivate the license on the other computer(s).

  1. Make sure that the EthoVision XT computer is connected to the internet.
  2. In EthoVision XT, choose Help > Deactivate License.
  3. A message appears: The license was successfully deactivated.
  4. Click Close. You can now activate that floating license on another computer. See Activate Your EthoVision XT License.

See Also

  • Activate Your EthoVision XT License
  • Types of EthoVision XT License

Turn a Floating License to a Computer-Locked License

Aim

You may want to turn a floating license to a computer-locked (fixed-seat) license so you can use EthoVision XT on a computer without an internet connection.

Prerequisites

  • You have an Activation Key for your license.

Procedure

  1. Open EthoVision XT and deactivate the floating license. An internet connection is required for this step. See Deactivate a Floating License.
  2. After deactivation of the license, EthoVision XT closes.
  3. Start EthoVision XT on the computer where you want to have the license activated.
  4. Choose Activate software license key, then Computer-locked. Follow the instructions in Activate a Computer-Locked License - Online.

See Also

  • Types of EthoVision XT License

Turn a Computer-Locked License to a Floating License

Aim

You may want to turn a computer-locked (fixed-seat) license to a floating license because you want to use EthoVision XT on multiple computers, although not simultaneously. Note that if you purchased multiple floating licenses, you can work on multiple computers simultaneously, because a license will be active on each computer.

Prerequisites

  • You have the Activation Key for your license.

Procedure

  1. Open EthoVision XT and deactivate the computer-locked license. See Deactivate a Computer-Locked License.
  2. After deactivation of the license, EthoVision XT closes.
  3. Start EthoVision XT on the computer where you want to activate the floating license. An internet connection is required for this step.
  4. Choose Activate software license key, then Floating - On multiple computers. Follow the instructions in Activate a Floating License.

Notes

  • If you choose to deactivate offline, first click OK, then scan the QR code that appears. Follow the link and click/tap Deactivate.

See Also

  • Types of EthoVision XT License

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