Stata licenses are issued as a License and Activation Key, which typically includes a serial number, a code, and an authorization. Stata installation guide
You have invested (Stata licenses range from $198 for Small to over $4,500 for MP/18). Protect it.
Once you have purchased a Stata license, you will receive an activation key. The activation key is a unique code that unlocks your Stata license and allows you to use the software.
Why it happens: You accidentally downloaded the "Network" installer instead of the "Standalone" installer. Solution: Uninstall and download the correct installer from your account. Never try to force a network license to work as a standalone key.
Once you have received your activation details, follow these steps to initialize your software: License Activation Key request and registration - Stata