I am getting the “Failed to activate license: license activation failed: device fingerprint mismatch” repeatedly in the logs after redeploying my EC2 instance.
I understand my license was linked to my older EC2 instance, but isn’t there any way I can recover my license key so I can keep it? This instance will keep getting redeployed for updating purposes in the future.
Information on your n8n setup
- n8n version: 1.81.4
- Database: PostgreSQL
- n8n EXECUTIONS_PROCESS setting (default: own, main): default
- Running n8n via: Docker
- Operating system: Amazon Linux 2023
@LVidal555 you should contact the n8n admin.
Thanks for your quick reploy @Alex_Huang! Who is the n8n admin? You mean an n8n official support?
I was facing the same issue until I realized that you can simply regenerate a key from /settings/usage (=registering your community edition)
may not be ideal if your instance redeploy on a regular basis, but it at least works
if your key grants access to more features (which I am not sure) that may not work. only applies for this offer: 🎁 Unlock these three features for free on your self-hosted community edition!
Still getting the same error. Really looks like my acccount got registered with a fingerprint associated to an EC2 instance that no longer exists…
If you deployed from an image, that could be the issue. You may want to install n8n fresh.
Well, the solution was to clear PostgreSQL database before redeploying the EC2 machine, which is quite a pain. I may have to find out where is the device fingerprint stored so I don’t lose everything every time I want to upgrade the EC2 OS.
Thank you all for the replies.
Awesome. Glad could help. Appreciate to mark me as solution if was close to helping, else you can mark yours as solution. 
