How to solve error 1616 for licence activation when old computer crashed and License Center doesn't show a deactivation tab?

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Robert
Robert 2025-10-19
评论： Robert 2025-10-26
My old computer crashed. I tried to install Matlab on my new one. Activation generates error 1616.
Mathworks solution to deactivate the old computer does not apply as it already seems to be desctivated. It does not generate a deactivation tab.
When I try to manually activate the license in the License Center, an unspecified error is generated in case the Mac address has been used or it states that `Information needed to identify your computer is missing or invalid.` when the local ip/address (IPv4) is used.
What more can be tried?
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Robert
Robert 2025-10-20
I tried the MAC address, the IPv4vaddress (as suggested sometimes) and also the Volume Serial Number. All resulted in an error when I tried to generate a license file.

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Image Analyst
Image Analyst 2025-10-19
On the web site, login to your account and look at your license(s).
Click on the tools icon:
You'll see this:
Click "Deactivate a Computer" to deactivate your old, inaccessible computer through the web site even if you no longer have physical access to the computer or can't boot or log in to it.
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