Erroe after 1.74.3 update to latest

[Olesya_A]

Hello. I am using selfhosted instance (n8n starter kit).
After updating 1.74.3 to the latest (1.75.2) version, I get an error when opening each workflow:

Init Problem

There was a problem loading init data:
Credentials could not be decrypted. The likely reason is that a different “encryptionKey” was used to encrypt the data.

And all my workflows where there is a node HTTP request become inoperative (screenshot)

.

My encryption key has definitely not changed and I launched the update using the standard method in Docker.

I have two installations with the same problem.
And one installation on the render.com, where there are only 2 workflows without HTTP request nodes. There the update 1.75.2 was installed and does not cause errors.

I need help with the update my Docker instances. Thanks.

Information on your n8n setup

• n8n version: latest
• Database (default: SQLite): Postgress
• n8n EXECUTIONS_PROCESS setting (default: own, main):
• Running n8n via (Docker, npm, n8n cloud, desktop app): Docker
• Operating system: Ubuntu 22

[Vicente_C]

I faced the same issue after updating n8n, and the solution I found is as follows:

Before updating to a newer version of n8n, edit and re-save all your credentials. This ensures they are re-encrypted using the current encryption method.

Steps to resolve the issue:

1. Go to the “Credentials” section in n8n.
2. Edit each credential (you don’t need to make actual changes, just open and save them again).
3. Once all credentials are re-saved, proceed with the update.

This worked for me and resolved the errors caused by outdated encryption. If you’re experiencing similar issues, I recommend trying this before updating.

[Olesya_A]

Thanks! For my instances helps deleting bad credentials.
At some point, two new credentials Ollama and Qdrant were created automaticly. Trying to edit them caused an " Init Problem" error. Deleting this two credentials fixed the issue.