Yesterday I installed self-hosted N8N for the first time. After receiving the license via email, when I try to upload it, I get the error “Activation Key has already been used on this instance.” Can anyone help me?
Hi @Simo007 Welcome!
For this issue, first consider checking that if the instance is already registered or not, via:
Settings → Usage and Plan → if it shows [Registered] means it already is.
If it does not, then you have to manually clear the license with:
docker exec -u node -it [n8n-container-name] n8n license:clear
and then just restart your n8n container and once it boots up re enter your key there, and let us know if that works or na.
Hi Anshul
Thank you so much for your message.
Under “Usage and Plan,” it already says “Registered.” So I don’t need to do anything, and everything is already okay?
@Simo007 YES! You are right, you dont have to do anything your n8n community license is already activated! Look here at what it gets you:
Cheers! Consider marking that as a solution if it helped!
Hey Anshul
Thank you so much for your help. You’ve been very kind. 
Have a great day!
Also @Simo007 i have wrote a short article on community edition features, you can also check that out here:
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