License unusable after reinstallation

1. What version of Mathcad are you using?

2. Tip - "How to Transfer Mathcad license from an existing Host ID to a new Host ID for commercial license": https://community.ptc.com/t5/Mathcad-Installation/How-to-Transfer-Mathcad-license-from-an-existing-Host-ID-to-a/m-p/788323#M1599

@ML_8506212,

What steps you have performed during re-installation and what error do you get after re-installation?

@ML_8506212,

Do you still need help on this post?