You can install a single licensed copy on up to five computers concurrently if you own them and use them for personal use. Computers used professionally or owned by a business or other non-individual are not covered and require a separate license each.

See more here: https://www.stardock.com/support/software_eula.aspx

Hi,

is still Object Desktop allowed to be installed on up to 5 personal PC's in 2021 ?

Thanks

just unistall in the old pc, and reinstall into the new pc is enough?

but..What if the hd from the previous installation failed and cannot be uninstalled?

Hello,

You can use the deactivate old activation guide here to do that : https://forums.stardock.com/486311/accounts-and-activation-support-faq#deactivateproduct

Thank you,

Basj,
Stardock Community Assistant

Is it only valid if it was purchased from this page? If I bought the license from humble bumdle, how do I associate my account with the purchased key?

Please raise a support ticket using this link and include all your details in there. Support will help you from there. https://stardock.atlassian.net/servicedesk/customer/portal/4 

Thank you,

Basj,
Stardock Community Assistant

ok thanks, for now it was just a question, anticipating a possible future problem