Error connecting to n8n - docker

Berez · September 8, 2025, 1:52pm

Hi Community,

After ending my trail in n8n i downloaded docker to run it locally and continue improving.

I have pulled the image n8nio/n8n and then ran it, but once in, I have the following pop-up message.

I am able to start and connect some of the nodes, but for example I am not able to connect to google or microsoft services.

Do you know where the problem can be?

Thanks in advance

jabbson · September 8, 2025, 2:29pm

The issue that you are showing on the screenshot is probably related to this bug:

github.com/n8n-io/n8n

"Error connecting to n8n Could not connect to server" after update to 1.109.1

opened 03:12PM - 03 Sep 25 UTC

H4qu3r

in linear

### Bug Description After updating **n8n** to version **1.109.1**, a red pop-up… appears in the bottom right with the warning: "_**Error connecting to n8n Could not connect to server. Refresh to try again.**_" <img width="331" height="98" alt="Image" src="https://github.com/user-attachments/assets/5355d626-498b-4a7e-bf86-4f0d2d09a67b" /> I self-host n8n (as localhost) on Podman on Windows 11. I installed it using docker-compose.yml, created according to this guide: [(https://docs.n8n.io/hosting/installation/docker/#prerequisites)] YAML ``` version: '3.8' services: n8n: build: . container_name: n8n restart: unless-stopped environment: - GENERIC_TIMEZONE=Europe/Warsaw - N8N_ENFORCE_SETTINGS_FILE_PERMISSIONS=true - N8N_REINSTALL_MISSING_PACKAGES=true - N8N_RUNNERS_ENABLED=true - DB_SQLITE_POOL_SIZE=8 volumes: - n8n_data:/home/node/.n8n ports: - "5678:5678" postgres: image: postgres:16 container_name: postgres restart: unless-stopped environment: - POSTGRES_USER=************ - POSTGRES_PASSWORD=************ - POSTGRES_DB=************ volumes: - postgres_data:/var/lib/postgresql/data ports: - "5432:5432" qdrant: image: qdrant/qdrant:latest container_name: qdrant restart: unless-stopped ports: - "6333:6333" - "6334:6334" volumes: - qdrant_data:/qdrant/storage volumes: n8n_data: name: n8n_data postgres_data: name: postgres_data qdrant_data: name: qdrant_data ``` Up until version **1.108.2**, everything I used in n8n worked fine. The warning appeared starting with version **1.109.1**. Updating to **1.109.2** didn't change anything. I know someone else is having this problem on Docker: [(https://community.n8n.io/t/help-needed-docker-on-windows-healthy-backend-listening-but-frontend-fails-with-could-not-connect-401-unauthorized/180811)] The advice from this post to "Try to set **N8N_PROTOCOL** to **http**" didn't help me :/ ### To Reproduce 1. Install n8n on Windows 11 with Podman Engine 5.6.0 as localhost by default. 2. Go to the login page. 3. Check the bottom right corner of the page. ### Expected behavior Pop-up appears in the bottom right with the warning: "_**Error connecting to n8n Could not connect to server. Refresh to try again.**_" ### Debug Info # Debug info ## core - n8nVersion: 1.109.2 - platform: docker (self-hosted) - nodeJsVersion: 22.19.0 - database: sqlite - executionMode: regular - concurrency: -1 - license: enterprise (production) - consumerId: 07dbed52-494f-42a1-973a-05b974c8a970 ## storage - success: all - error: all - progress: false - manual: true - binaryMode: memory ## pruning - enabled: true - maxAge: 336 hours - maxCount: 10000 executions ## client - userAgent: mozilla/5.0 (windows nt 10.0; win64; x64) applewebkit/537.36 (khtml, like gecko) chrome/137.0.0.0 safari/537.36 opr/121.0.0.0 - isTouchDevice: false Generated at: 2025-09-03T15:10:51.338Z ### Operating System Windows 11 Pro 24H2 (26100.5074) ### n8n Version 1.109.2 ### Node.js Version 22.19.0 ### Database SQLite (default) ### Execution mode main (default) ### Hosting self hosted

system · December 7, 2025, 2:29pm

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