Student Edition License Activation Failed After Windows Reinstallation – PSIM 26.1 (Error -29)

YEXUN

Hello Altair Community,

I am an undergraduate student at Jiangsu University, China. I have successfully completed student verification and obtained an Altair Student Edition license for Simcenter PSIM 26.1.

In July 2026, I reinstalled Windows on the same physical computer. Unfortunately, I could not deactivate my previous license activation before reinstalling the operating system.

Since then, I have been unable to reactivate my student license.

1. License activation error

When I try to activate my license through Altair License Utility, I receive the following message:

"This license was already activated using different HostIDs."

2. PSIM licensing error

When I launch PSIM 26.1, I receive:

• Error Code: -29
• Requested CT/TTF license not found for given customer ID
• Features affected: PSIMPowerSupplyFeature and PSIMPowerSupply

My current HostID is A428_B701_FDA5_004B.

I have already contacted the support email addresses I could find, but received an automatic reply stating that the mailbox was decommissioned and no support case was created.

I previously posted about this issue in the community, but I have not received a response yet.

Could an Altair representative please help me reset or release the previous license activation associated with my old HostID? I am using the same physical computer and would like to reactivate my existing student license.

I would also appreciate help investigating the Error Code -29 issue.

I can provide screenshots, my license activation details, and any additional information privately if required.

Thank you for your time and assistance.

Best regards,
Bo Xun Ye
Jiangsu University, China

Ankita_v

Hi,

Your previous license key activation is now deactivated in Altair one, you can now reactivate the student license with the same license key.

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

Pls see this to review limitations of Altair PSIM Student Edition in the following discussion-
https://community.altair.com/discussion/20011/issue-simcoder-components-are-constantly-disabled-student-license
You might find the following discussions useful -
https://community.altair.com/discussion/comment/200137#Comment_200137

Thanks