License Activation Issue: "Already activated using different HostIDs" - Version 2026

Hello Altair Support,

I am using the Altair 2026 Student Edition and I am encountering an error during the activation process.

When I enter my activation key in the Altair License Utility, I receive the following error message: "Error activating license: This license was already activated using different HostIDs."

I have had a hardware change and need to reactivate the software on my current machine. Since I cannot deactivate the previous activation myself, could you please reset my activation key/HostID record?

Thank you for your assistance!

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Accepted answers

Ankita_v

@DannyKen

Please ensure to NOT enter your Altair One Credentials in the RapidMiner Login window of AI Studio, and click on switch to Altair Units license as guided here - https://www.youtube.com/watch?v=2uJg6heRZBs

Your account is active in Altair one. To use Altair AI Studio (previously called RapidMiner Studio), you need to make sure you are switching to Altair Units Licensing while accessing AI studio.

Follow the Troubleshooting instructions if using Windows - https://community.altair.com/discussion/33114/steps-to-activate-ai-studio-with-the-altair-student-edition-license-key-from-altair-one-com-in-windows-and-other-related-ai-studio-troubleshooting.
Follow the Troubleshooting instructions if using MAC OS - https://community.altair.com/discussion/33209/steps-to-activate-ai-studio-with-the-altair-student-edition-license-key-from-altair-one-com-in-mac-os-apple-and-other-related-ai-studio-troubleshooting

Thanks

All comments

Ankita_v

@DannyKen

Your license key has been deactivated in Altair One, and you can now reactivate your student license using the same key.

Kindly note, The Altair Free Student Edition license is valid for use on only one device, it cannot be shared or activated on multiple machines at the same time AND Deactivation and reactivation feature is only if a computer breaks down or reformatted and is only allowed a few times per user preprogrammed into the system.

You can deactivate the license from one machine and reactivate in another by yourself if you have access to both machines as per –
https://community.altair.com/discussion/34280/altair-student-edition-deactivate-from-one-computer-to-activate-in-another-in-the-rare-case-a-computer-is-lost-or-malfunctional#latest

Thank you

DannyKen

Thank you!

I also have this problem!

How could I solve this?

Thank you in advance!

Ankita_v

@DannyKen

Your account is active in Altair one. To use Altair AI Studio (previously called RapidMiner Studio), you need to make sure you are switching to Altair Units Licensing while accessing AI studio.

Follow the Troubleshooting instructions if using Windows - https://community.altair.com/discussion/33114/steps-to-activate-ai-studio-with-the-altair-student-edition-license-key-from-altair-one-com-in-windows-and-other-related-ai-studio-troubleshooting.
Follow the Troubleshooting instructions if using MAC OS - https://community.altair.com/discussion/33209/steps-to-activate-ai-studio-with-the-altair-student-edition-license-key-from-altair-one-com-in-mac-os-apple-and-other-related-ai-studio-troubleshooting

Thanks