
What I suspect is that your authorization may be only the ACT but none of the fulfillments. I don't believe it will make a difference. You can try an install to C:, but a drive installation should be fine.

Choose "Authorize at Esri's website or by email to receive your authorization file." and click on Next.If you do not have a provisioning file, choose the 1st option (I have installed my software and need to authorize it) and click on Next. If you have a provisioning file, choose option 3 here (I have received an authorization file.) and browse to your provisioning file.Choose Advanced Single Use and click Authorize Now.

Launch the ArcGIS Administrator as an administrator (right-click on shortcut > run as administrator).

Esri reset my licenses and had me authorize using the following steps. My.esri doesn't show the license numbers so I can't produce a provisioning file.
