If changing permissions fails, purging the local license folder forces the software to re-register the machine cleanly. Open .

: Always back up your project library before performing a major update. 2. Run as Administrator (Windows Fix)

Open , select Allow an app through firewall , and ensure both Private and Public checkboxes are ticked for DaVinci Resolve. Step-by-Step Solutions for macOS Users

This is the number one reason users see repeated activation prompts. There are two distinct versions of DaVinci Resolve available for download:

Resolve needs to "phone home" to Blackmagic’s servers occasionally to verify the license. If a firewall, DNS setting, or aggressive ISP filter blocks this connection, the software may default to asking for the key again.

Major updates (e.g., from version 18 to 19) or even minor updates can sometimes cause the license file to become unlinked.