Outlook reply node Method not allowed - please check you are using the right HTTP method"

JosdeWit · March 4, 2025, 7:41am

Describe the problem/error/question

My system doesn’t reply to emails. It does send emails & gets all unread emails.

What is the error message (if any)?

“Method not allowed - please check you are using the right HTTP method”

Please share your workflow

{
“nodes”: [
{
“parameters”: {
“inputSource”: “passthrough”
},
“type”: “n8n-nodes-base.executeWorkflowTrigger”,
“typeVersion”: 1.1,
“position”: [
0,
0
],
“id”: “a0adb116-ac33-4380-bc62-b57bf4355740”,
“name”: “When Executed by Another Workflow”
},
{
“parameters”: {
“promptType”: “define”,
“text”: “={{ $json.query }}”,
“options”: {}
},
“type”: “@n8n/n8n-nodes-langchain.agent”,
“typeVersion”: 1.7,
“position”: [
220,
0
],
“id”: “c12c8076-b902-4de6-8ebe-a0f3fbf73945”,
“name”: “AI Agent”,
“executeOnce”: false,
“alwaysOutputData”: false,
“retryOnFail”: false
},
{
“parameters”: {
“toRecipients”: “={{ /n8n-auto-generated-fromAI-override/ $fromAI(‘To’, ``, ‘string’) }}”,
“subject”: “={{ /n8n-auto-generated-fromAI-override/ $fromAI(‘Subject’, ``, ‘string’) }}”,
“bodyContent”: “={{ /n8n-auto-generated-fromAI-override/ $fromAI(‘Message’, ``, ‘string’) }}”,
“additionalFields”: {}
},
“type”: “n8n-nodes-base.microsoftOutlookTool”,
“typeVersion”: 2,
“position”: [
320,
260
],
“id”: “f8884788-3ec5-414e-9e6f-c436ab2f0ab4”,
“name”: “Send”,
“webhookId”: “410e31d4-3910-4dd0-a2f7-493f0fd642a9”,
“credentials”: {
“microsoftOutlookOAuth2Api”: {
“id”: “bs9Ik022gDbqdbTl”,
“name”: “Microsoft Outlook account”
}
}
},
{
“parameters”: {
“model”: {
“__rl”: true,
“mode”: “list”,
“value”: “gpt-4o-mini”
},
“options”: {}
},
“type”: “@n8n/n8n-nodes-langchain.lmChatOpenAi”,
“typeVersion”: 1.2,
“position”: [
40,
260
],
“id”: “ff14a2b4-091b-464b-8bc0-5ae5a54d9473”,
“name”: “OpenAI Chat Model”,
“credentials”: {
“openAiApi”: {
“id”: “LHmzOzgBzubgv31h”,
“name”: “OpenAi account”
}
}
},
{
“parameters”: {
“operation”: “getAll”,
“limit”: 10,
“filtersUI”: {
“values”: {
“filters”: {
“readStatus”: “unread”
}
}
},
“options”: {}
},
“type”: “n8n-nodes-base.microsoftOutlookTool”,
“typeVersion”: 2,
“position”: [
440,
260
],
“id”: “2318db9c-bb55-4b01-a81f-1a7782ca1de7”,
“name”: “Unread”,
“webhookId”: “eee6494b-b7b9-49db-802a-e9d52295eb9b”,
“credentials”: {
“microsoftOutlookOAuth2Api”: {
“id”: “bs9Ik022gDbqdbTl”,
“name”: “Microsoft Outlook account”
}
}
},
{
“parameters”: {
“operation”: “reply”,
“messageId”: {
“__rl”: true,
“value”: “={{ /n8n-auto-generated-fromAI-override/ $fromAI(‘Message’, ``, ‘string’) }}”,
“mode”: “id”
},
“message”: “={{ /n8n-auto-generated-fromAI-override/ $fromAI(‘Message’, ``, ‘string’) }}”,
“options”: {}
},
“type”: “n8n-nodes-base.microsoftOutlookTool”,
“typeVersion”: 2,
“position”: [
560,
260
],
“id”: “3b35b3c5-3ec7-43f7-93b0-c9944457f3b7”,
“name”: “Reply”,
“webhookId”: “9e757b65-ee87-4ee9-8c4a-36c3a9d8f58c”,
“credentials”: {
“microsoftOutlookOAuth2Api”: {
“id”: “bs9Ik022gDbqdbTl”,
“name”: “Microsoft Outlook account”
}
}
},
{
“parameters”: {
“sessionIdType”: “customKey”,
“sessionKey”: “={{ $json.query }}”
},
“type”: “@n8n/n8n-nodes-langchain.memoryBufferWindow”,
“typeVersion”: 1.3,
“position”: [
180,
260
],
“id”: “e22df7e0-2041-4e0e-8828-987789e1108a”,
“name”: “Window Buffer Memory”
}
],
“connections”: {
“When Executed by Another Workflow”: {
“main”: [
[
{
“node”: “AI Agent”,
“type”: “main”,
“index”: 0
}
]
]
},
“Send”: {
“ai_tool”: [
[
{
“node”: “AI Agent”,
“type”: “ai_tool”,
“index”: 0
}
]
]
},
“OpenAI Chat Model”: {
“ai_languageModel”: [
[
{
“node”: “AI Agent”,
“type”: “ai_languageModel”,
“index”: 0
}
]
]
},
“Unread”: {
“ai_tool”: [
[
{
“node”: “AI Agent”,
“type”: “ai_tool”,
“index”: 0
}
]
]
},
“Reply”: {
“ai_tool”: [
[
{
“node”: “AI Agent”,
“type”: “ai_tool”,
“index”: 0
}
]
]
},
“Window Buffer Memory”: {
“ai_memory”: [
[
{
“node”: “AI Agent”,
“type”: “ai_memory”,
“index”: 0
}
]
]
}
},
“pinData”: {
“When Executed by Another Workflow”: [
{
“query”: “Reply to Jos to ask to have the work done by tuesday.”
}
]
},
“meta”: {
“instanceId”: “829c9e8624aeb0630e1f143103470cb95409eae2b893ab528fc758dcc950d7f3”
}
}

(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)

Share the output returned by the last node

Information on your n8n setup

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

hubschrauber · March 5, 2025, 4:54am

It will help if you edit your post and place a line with 3 back-tics above and below the workflow json like:

```
{ workflow source here }
```

JosdeWit · March 5, 2025, 9:43am

Thanks for the tip!

{
“nodes”: [
{
“parameters”: {
“inputSource”: “passthrough”
},
“type”: “n8n-nodes-base.executeWorkflowTrigger”,
“typeVersion”: 1.1,
“position”: [
0,
0
],
“id”: “a0adb116-ac33-4380-bc62-b57bf4355740”,
“name”: “When Executed by Another Workflow”
},
{
“parameters”: {
“promptType”: “define”,
“text”: “={{ $json.query }}”,
“options”: {}
},
“type”: “@n8n/n8n-nodes-langchain.agent”,
“typeVersion”: 1.7,
“position”: [
220,
0
],
“id”: “c12c8076-b902-4de6-8ebe-a0f3fbf73945”,
“name”: “AI Agent”,
“executeOnce”: false,
“alwaysOutputData”: false,
“retryOnFail”: false
},
{
“parameters”: {
“toRecipients”: “={{ /n8n-auto-generated-fromAI-override/ $fromAI(‘To’, ``, ‘string’) }}”,
“subject”: “={{ /n8n-auto-generated-fromAI-override/ $fromAI(‘Subject’, ``, ‘string’) }}”,
“bodyContent”: “={{ /n8n-auto-generated-fromAI-override/ $fromAI(‘Message’, ``, ‘string’) }}”,
“additionalFields”: {}
},
“type”: “n8n-nodes-base.microsoftOutlookTool”,
“typeVersion”: 2,
“position”: [
320,
260
],
“id”: “f8884788-3ec5-414e-9e6f-c436ab2f0ab4”,
“name”: “Send”,
“webhookId”: “410e31d4-3910-4dd0-a2f7-493f0fd642a9”,
“credentials”: {
“microsoftOutlookOAuth2Api”: {
“id”: “bs9Ik022gDbqdbTl”,
“name”: “Microsoft Outlook account”
}
}
},
{
“parameters”: {
“model”: {
“__rl”: true,
“mode”: “list”,
“value”: “gpt-4o-mini”
},
“options”: {}
},
“type”: “@n8n/n8n-nodes-langchain.lmChatOpenAi”,
“typeVersion”: 1.2,
“position”: [
40,
260
],
“id”: “ff14a2b4-091b-464b-8bc0-5ae5a54d9473”,
“name”: “OpenAI Chat Model”,
“credentials”: {
“openAiApi”: {
“id”: “LHmzOzgBzubgv31h”,
“name”: “OpenAi account”
}
}
},
{
“parameters”: {
“operation”: “getAll”,
“limit”: 10,
“filtersUI”: {
“values”: {
“filters”: {
“readStatus”: “unread”
}
}
},
“options”: {}
},
“type”: “n8n-nodes-base.microsoftOutlookTool”,
“typeVersion”: 2,
“position”: [
440,
260
],
“id”: “2318db9c-bb55-4b01-a81f-1a7782ca1de7”,
“name”: “Unread”,
“webhookId”: “eee6494b-b7b9-49db-802a-e9d52295eb9b”,
“credentials”: {
“microsoftOutlookOAuth2Api”: {
“id”: “bs9Ik022gDbqdbTl”,
“name”: “Microsoft Outlook account”
}
}
},
{
“parameters”: {
“operation”: “reply”,
“messageId”: {
“__rl”: true,
“value”: “={{ /n8n-auto-generated-fromAI-override/ $fromAI(‘Message’, ``, ‘string’) }}”,
“mode”: “id”
},
“message”: “={{ /n8n-auto-generated-fromAI-override/ $fromAI(‘Message’, ``, ‘string’) }}”,
“options”: {}
},
“type”: “n8n-nodes-base.microsoftOutlookTool”,
“typeVersion”: 2,
“position”: [
560,
260
],
“id”: “3b35b3c5-3ec7-43f7-93b0-c9944457f3b7”,
“name”: “Reply”,
“webhookId”: “9e757b65-ee87-4ee9-8c4a-36c3a9d8f58c”,
“credentials”: {
“microsoftOutlookOAuth2Api”: {
“id”: “bs9Ik022gDbqdbTl”,
“name”: “Microsoft Outlook account”
}
}
},
{
“parameters”: {
“sessionIdType”: “customKey”,
“sessionKey”: “={{ $json.query }}”
},
“type”: “@n8n/n8n-nodes-langchain.memoryBufferWindow”,
“typeVersion”: 1.3,
“position”: [
180,
260
],
“id”: “e22df7e0-2041-4e0e-8828-987789e1108a”,
“name”: “Window Buffer Memory”
}
],
“connections”: {
“When Executed by Another Workflow”: {
“main”: [
[
{
“node”: “AI Agent”,
“type”: “main”,
“index”: 0
}
]
]
},
“Send”: {
“ai_tool”: [
[
{
“node”: “AI Agent”,
“type”: “ai_tool”,
“index”: 0
}
]
]
},
“OpenAI Chat Model”: {
“ai_languageModel”: [
[
{
“node”: “AI Agent”,
“type”: “ai_languageModel”,
“index”: 0
}
]
]
},
“Unread”: {
“ai_tool”: [
[
{
“node”: “AI Agent”,
“type”: “ai_tool”,
“index”: 0
}
]
]
},
“Reply”: {
“ai_tool”: [
[
{
“node”: “AI Agent”,
“type”: “ai_tool”,
“index”: 0
}
]
]
},
“Window Buffer Memory”: {
“ai_memory”: [
[
{
“node”: “AI Agent”,
“type”: “ai_memory”,
“index”: 0
}
]
]
}
},
“pinData”: {
“When Executed by Another Workflow”: [
{
“query”: “Reply to Jos to ask to have the work done by tuesday.”
}
]
},
“meta”: {
“instanceId”: “829c9e8624aeb0630e1f143103470cb95409eae2b893ab528fc758dcc950d7f3”
}
}

hubschrauber · March 5, 2025, 2:35pm

Sorry, it’s still showing as JSON source. Maybe it’s partly the mangled quotes (e.g. “type” instead of "type") keeping it from working. Did you perhaps open the JSON source in a “helpful” text editor that reformats from plain text, between n8n and the forums?

Next time, try

highlighting/selecting the nodes directly in the n8n editor
ctrl/cmd-c (copy)
Immediately ctrl/cmd-v (paste) in the forum post editor.

When you have it entered correctly, it will show up in the preview as a box with the workflow nodes in it, which will look just like it does in the n8n editor (i.e. graphical, not json text - see below).

Also, you can usually edit your original post or comment instead of adding a comment.

I was curious what might be causing this, so I already fixed it here. More people might try to help if they can quickly copy/paste your workflow/nodes and take a look at what’s going on.

system · June 3, 2025, 2:36pm

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