How to fix 'Unchecked runtime.lastError: The message port closed before a response was received' chrome issue?

Question

I'm using VueJS and Laravel for my project. This issue started to show lately and it shows even in the old git branches.

This error only shows in the Chrome browser.

Check my answer to this other request: https://stackoverflow.com/questions/53919591/chrome-angular-unchecked-runtime-lasterror-the-message-port-closed-before-a-res — Dolfiz, Jan 10 '19 at 11:38
Thanks guys, the problem was the extension "Video Downloader professional". — 3UMF, Jan 10 '19 at 14:05
**Moderator Note:** We don't need new answers listing every extension you've found to cause this problem. A single answer saying that the problem can be caused by extensions and recommending to disable them is sufficient. Answers that do nothing more than name an extension have been and will continue to be deleted. — Cody Gray - on strike, Oct 24 '21 at 06:40
https://stackoverflow.com/questions/59914490/how-to-handle-unchecked-runtime-lasterror-the-message-port-closed-before-a-res perhaps the answer here is more beneficial than simply 'disable x extension' — bongoSLAP, Jan 03 '22 at 00:43
VeePN extension (https://chrome.google.com/webstore/detail/free-vpn-for-chrome-vpn-p/majdfhpaihoncoakbjgbdhglocklcgno) generates this error in Chrome too. It's the price for letting extensions mess up with core! — sasho, Apr 23 '22 at 11:51

score 498 · Accepted Answer · answered Feb 10 '19 at 07:50

498

I disabled all installed extensions in Chrome - works for me. I have now clear console without errors.

answered Feb 10 '19 at 07:50

MirekH

5,236
1
13
5

49

MeddleMonkey disabled – terantul Jul 11 '19 at 13:07
28

I had this problem, was caused by the Norton Safe Search Extension – Boardy Jul 26 '19 at 10:04
9

In my case the extension was Google Publisher Toolbar – Leandro Castro Aug 23 '19 at 18:17
2

I had the extension "Video Speed Controller" in a broken state. Repaired it then the error was gone. – Alielson Piffer Sep 06 '19 at 16:08
14

For me it was "Norton Safe Web". – frankfurt-laravel Oct 30 '19 at 19:38
2

For me it was the Kaspersky Protection extension. (you'd think antivirus developers would be a bit more careful with ensuring their software is bug-free!) – Venryx Nov 16 '19 at 21:00
123

How is disabling all extensions a solution... or even a consideration. For many of us the extensions provide essential functionality. – Vince Dec 15 '19 at 05:54
1

For me it was Shortkeys (Custom Keyboard Shortcuts) extension – graceman9 Dec 15 '19 at 22:04
4

For my case it's be an extension "What a font" – TarasH Dec 16 '19 at 15:30
1

Spreed - Same issue – Barrie Reader Jan 18 '20 at 09:09
3

For me, it was "Color Contrast Analyzer". – Jeff Miller Jan 23 '20 at 21:52
1

For me, disabled just "Adskill" – Valdemar Mar 06 '20 at 12:20
1

For me, I had to disable "Google™ Search Keyboard Shortcuts - RESULTER" – Toine H Apr 06 '20 at 09:42
2

Disabling or toggling extensions that are listening to browser interactions may cause this, i.e. WebRecorders, API Assistants (Amazon..) and others that are constantly waiting for interaction... – Bruno Miyamotto Luque May 01 '20 at 17:38
1

React-Sight extension was the culprit for me – redochka Jun 10 '20 at 16:36
2

My case it was Stylish – Tahazzot Jun 18 '20 at 12:57
1

It was "Screen Capture" by Google in my case. Great tool anyways! – krankuba Jul 28 '20 at 08:19
1

I disabled Norton Safe Search Extension and the error is gone. – Kenzo Aug 21 '20 at 18:04
it is causing because of Middlemonkey extension from my end. I disabled it and my console is fully ok with no error – Ariful Islam Aug 30 '20 at 04:53
2

Perfect. I just run the code into incognito to check and it's worked. – Frank Oct 07 '20 at 09:47
1

My problematic Chrome extension: OurStickys - Sticky Notes on every page – Orici Oct 12 '20 at 10:02
1

Disable "TamperMonkey" for me – Ian Jamieson Oct 14 '20 at 17:06
1

For me it was 'Piggy' – Nats Oct 30 '20 at 12:53
7

disable "Wappalyzer" extension in Chrome for me – Deniz Nov 12 '20 at 06:45
1

In my case it was 'AdGuard' extension. – pa4080 Nov 12 '20 at 14:17
1

Wappalyzer for me as well. – Pavel Donchev Nov 16 '20 at 13:18
1

For me is "MeddleMonkey" – Jadian Nov 23 '20 at 01:24
1

For me "Augury" – Sebastian Denis Dec 02 '20 at 09:16
3

Google Voice extension just started this for my today. – sazerac Apr 23 '21 at 18:43
1

Norton Safe Web for me. – BlueStaggo Apr 25 '21 at 10:09
1

...in my case that is extension "DuckDuckGo Privacy Essentials" – TYPO3UA Apr 27 '21 at 08:54
1

For me StayFocusd – Alessandro_Russo Jun 23 '21 at 12:31
4

I had to disable "Free VPN for Chrome - VPN Proxy VeePN" – Roshan Jul 18 '21 at 04:01
2

For me it was "WhatFont - Find Font" – Armando Guarino Jul 20 '21 at 07:04
2

For me it was "HTML Validator" (https://chrome.google.com/webstore/detail/html-validator/mpbelhhnfhfjnaehkcnnaknldmnocglk) – Royce Williams Sep 02 '21 at 05:06
I had just installed the ReactSight extension and it completely borked my page. Removing it fixed the problem. – Yvonne Aburrow Sep 15 '21 at 13:10
I broke the Dam. – Andrew Berridge Sep 23 '21 at 10:26
6

For me it was Dark Reader – Jakob Lindskog Sep 27 '21 at 15:59
in my case that extension is "Free VPN for Chrome - VPN Proxy VeePN" :D – Nibia Oct 08 '21 at 10:20
For me it was Piggy - Automatic Vouchers & Cashback 4.51.48 – Collins USHI Nov 01 '21 at 22:37
In my case it was Free VPN for Chrome - VPN Proxy VeePN. After I disabled it, console was clear. I Did not have to disable all extensions tho. – AllJs Nov 19 '21 at 07:05
how to find errors caused by which extension? – B N Manish Nov 20 '21 at 19:23
Hi, Can some one help me how to include addListener code in struts 1 web project . i use JS, JSP,HTML , FRAMES, CSS as UI stack. just wondered where exactly need to apply it. tried added below snippet in parent js file but it doesn't recognize. usually i dont have listener code in my app. chrome.runtime.onMessage.addListener(function(rq, sender, sendResponse) { setTimeout(function() { sendResponse({status: true}); }, 1); alert("Inside Background.js file"); return true; // Return true to fix the error }); – sasrra Dec 21 '21 at 09:27
1

OrangeMonkey disabled – Farhan Ibn Wahid Jan 12 '22 at 04:43
For me it was Font Scanner extension – EzzDev Jan 18 '22 at 02:23
It was natural reader to text extension causing the issue. – Billions.A.Joel Feb 20 '22 at 07:43
It didn't solve my problem – Amit Sharma Mar 10 '22 at 18:31
Error from the embedded Youtube video. Showing the youtube id in the very end of the error message (developer console). – Avatar Apr 15 '22 at 08:15
2

In my case, it was "Kaspersky". I had Kaspersky installed on my personal laptop. But the office laptop had its own antivirus. So when my extensions got synced, the Kaspersky extension got installed automatically. But since the Kaspersky application was not installed, I guess it kept throwing this error. – Anu Shibin Joseph Raj May 17 '22 at 06:18
had to disable ghostery – Jackie Santana Jun 03 '22 at 05:10
for me it was "Swiftreply - Canned Responses Work Everywhere" – malibil Aug 11 '22 at 06:41
In my case it Orange Monkey Extension – Prasad Siri Sep 13 '22 at 20:04
For me it was "Free VPN VeePN" – Benno Oct 05 '22 at 11:05
For me, it was [Grammarly Chrome Extension](http://grammarly.com) so I switched to using the Windows Desktop extension instead. – user692942 Oct 17 '22 at 13:22
DownThemAll! caused this issue on my machine. – Kam Dec 08 '22 at 20:15
Thanks a lot, it was `Free VPN for Chrome` extension, so I turned it off. Now I do not see those errors. – Hedayatullah Sarwary Feb 09 '23 at 05:55
it was free vpn (veepn) for me – Parham Abolghasemi Mar 13 '23 at 06:35

Ofek Shilon · Answer 2 · 2020-08-20T16:05:35.410

265

In case you're an extension developer who googled your way here trying to stop causing this error:

The issue isn't CORB (as another answer here states) as blocked CORs manifest as warnings like -

Cross-Origin Read Blocking (CORB) blocked cross-origin response https://www.example.com/example.html with MIME type text/html. See https://www.chromestatus.com/feature/5629709824032768 for more details.

The issue is most likely a mishandled async response to runtime.sendMessage. As MDN says:

To send an asynchronous response, there are two options:

return true from the event listener. This keeps the sendResponse function valid after the listener returns, so you can call it later.

return a Promise from the event listener, and resolve when you have the response (or reject it in case of an error).

When you send an async response but fail to use either of these mechanisms, the supplied sendResponse argument to sendMessage goes out of scope and the result is exactly as the error message says: your message port (the message-passing apparatus) is closed before the response was received.

Webextension-polyfill authors have already written about it in June 2018.

So bottom line, if you see your extension causing these errors - inspect closely all your onMessage listeners. Some of them probably need to start returning promises ~~(marking them as async should be enough).~~ [Thanks @vdegenne]

edited Aug 20 '20 at 16:05

answered Jun 06 '19 at 18:25

Ofek Shilon

14,734
5
67
101

29

As an heads up don't use `async/await` for your background listener callback. This is what failed for me, I removed `async` and transformed my `await` structure in a `then` structure code and now it works. – vdegenne Oct 02 '19 at 17:06
2

but... i'm not trying to send any response, nor am I expecting one! – Michael Mar 31 '20 at 03:45
21

What a great fix, thanks! All I had to do is add `return true;` at the bottom of my _chrome.runtime.onMessage.addListener()_ function and the problem was solved! I am using jQuery's `$.ajax` inside this function which is why I need this fix. – RcoderNY Jul 09 '20 at 04:45
1

@vdegenne you can use `async` for the listener, but then you can't `return true` at the end, and can't use the `sendResponse` callback. You just have to resolve **with** the actual response. – Papooch Feb 26 '21 at 12:22
this worked for me, but I had to return true from the callback in chrome.tabs.executeScript, which was inside a listener. – Zafar Mar 10 '21 at 21:29
1

Just calling sendResponse({}) within a (non-async) addListener callback worked for me (no need to return true, and just returning true didn't work for me) – Nicolas Trahan Oct 01 '21 at 19:07
2

@Michael In Chrome v99+ extensions, this is a bug: https://stackoverflow.com/q/71520198/2336725 – Teepeemm Apr 10 '22 at 22:04
@Teepeemm Curiously, I'm getting the same issue in Chrome 101 with a Manifest V2 extension. At least it should be fixed in 102. – Dai May 12 '22 at 19:51
Thats was very helpful I did get the same error because I was not executing the callback function in the message receiver. After adding that call everything is working perfectly. Thank you! – Hristo Petev Sep 24 '22 at 21:12

score 86 · Answer 3 · answered Feb 15 '19 at 19:10

86

If you go to chrome://extensions/, you can just toggle each extension one at a time and see which one is actually triggering the issue.

Once you toggle the extension off, refresh the page where you are seeing the error and wiggle the mouse around, or click. Mouse actions are the things that are throwing errors.

So I was able to pinpoint which extension was actually causing the issue and disable it.

answered Feb 15 '19 at 19:10

Aguayma

955
5
10

2

In my case it was 1password extension – Alexander Kim Mar 27 '19 at 05:20
5

in my case it was Color Contrast Analyzer – Michael Liquori Sep 25 '19 at 19:36
3

In my case it was `Google Publisher Toolbar` under Vivaldi `vivaldi://extensions` – Shim-Sao Oct 25 '19 at 18:38
Yes, disable extensions one by one. I figured out that there were several extensions causing the error! Thanks – Jose Mhlanga Apr 09 '20 at 20:02
2

In my case it was Kaspersky browser extension. – Masood Mar 29 '21 at 14:55
In my case it was VPN extension – Noman Shaikh Nov 06 '21 at 08:55
do you mean edge://extensions? :D – Cătălin Rădoi Mar 29 '22 at 09:37
In my case, it was OrangeMonkey – Chukwuemeka Maduekwe Aug 04 '22 at 14:08
in my case it was a VPN extension when was disabled every thing was ok – r.a.shehni Aug 26 '22 at 12:07
in my case Automation 360 (installed by my company) – Gerry May 11 '23 at 21:02

score 61 · Answer 4 · answered Aug 22 '19 at 11:52

61

Post is rather old and not closely related to Chrome extensions development, but let it be here.

I had same problem when responding on message in callback. The solution is to return true in background message listener.

Here is simple example of background.js. It responses to any message from popup.js.

chrome.runtime.onMessage.addListener(function(rq, sender, sendResponse) {
    // setTimeout to simulate any callback (even from storage.sync)
    setTimeout(function() {
        sendResponse({status: true});
    }, 1);
    // return true;  // uncomment this line to fix error
});

Here is popup.js, which sends message on popup. You'll get exceptions until you un-comment "return true" line in background.js file.

document.addEventListener("DOMContentLoaded", () => {
    chrome.extension.sendMessage({action: "ping"}, function(resp) {
        console.log(JSON.stringify(resp));
    });
});

manifest.json, just in case :) Pay attention on alarm permissions section!

{
  "name": "TestMessages",
  "version": "0.1.0",
  "manifest_version": 2,
  "browser_action": {
    "default_popup": "src/popup.html"
  },
  "background": {
    "scripts": ["src/background.js"],
    "persistent": false
  },
  "permissions": [
    "alarms"
  ]
}

answered Aug 22 '19 at 11:52

Aleksej Vasinov

2,662
28
29

It worked for me! What scenario the default `return false` would be useful? – Eduardo Reis Apr 27 '20 at 19:59
[Docs says](https://developer.chrome.com/extensions/runtime#event-onMessage): `This function becomes invalid when the event listener returns, unless you return true`. What means invalid? doesn't it suppose to be created every time it receives a message anyways? – Eduardo Reis Apr 27 '20 at 20:01
@EduardoReis, with FALSE it could be used as informer to notify about some event. – Aleksej Vasinov Apr 28 '20 at 06:21
Aleksej, Can you help me how to include addListener code in struts 1 web project . i use JS, JSP,HTML , FRAMES, CSS as UI stack. just wondered where exactly need to apply it. tried added below snippet in parent js file but it doesn't recognize. usually i dont have listener code in my app. chrome.runtime.onMessage.addListener(function(rq, sender, sendResponse) { setTimeout(function() { sendResponse({status: true}); }, 1); alert("Inside Background.js file"); return true; // Return true to fix the error }); – sasrra Dec 21 '21 at 09:28
Sorry, I don't know JSP to help you with. Did you locate listener in your JS code? – Aleksej Vasinov Dec 22 '21 at 07:18

score 28 · Answer 5 · answered Oct 04 '22 at 20:53

28

To me i was using a VPN extension called Free VPN for Chrome - VPN Proxy VeePN It was causing the error after disabling it only ... the error disappeared

answered Oct 04 '22 at 20:53

Zaid abu khalaf

776
8
15

score 14 · Answer 6 · answered Apr 02 '20 at 12:12

14

This error is generally caused by one of your Chrome extensions.

I recommend installing this One-Click Extension Disabler, I use it with the keyboard shortcut COMMAND (⌘) + SHIFT (⇧) + D — to quickly disable/enable all my extensions.

Once the extensions are disabled this error message should go away.

Peace! ✌️

answered Apr 02 '20 at 12:12

Ahmad Awais

33,440
5
74
56

ctrl+shit+d - don't work in linux, and no hotkeys for this extension. https://chrome.google.com/webstore/detail/disable-extensions-tempor/lcfdefmogcogicollfebhgjiiakbjdje And tanks for this extension. – serii Feb 11 '22 at 07:33

score 10 · Answer 7 · answered Jan 27 '20 at 12:37

10

Make sure you are using the correct syntax.

We should use the sendMessage() method after listening it.

Here is a simple example of contentScript.js It sendRequest to app.js.

contentScript.js

chrome.extension.sendRequest({
    title: 'giveSomeTitle', params: paramsToSend
  }, function(result) { 
    // Do Some action
});

app.js

chrome.extension.onRequest.addListener( function(message, sender, 
 sendResponse) {
  if(message.title === 'giveSomeTitle'){
    // Do some action with message.params
    sendResponse(true);
  }
});

answered Jan 27 '20 at 12:37

Gopal B Shimpi

129
1
6

1

`sendRequest` is deprecated use `sendMessage` – user889030 Aug 03 '20 at 07:33
Hi, Can some one help me how to include addListener code in struts 1 web project . i use JS, JSP,HTML , FRAMES, CSS as UI stack. just wondered where exactly need to apply it. tried added below snippet in parent js file but it doesn't recognize. usually i dont have listener code in my app. chrome.runtime.onMessage.addListener(function(rq, sender, sendResponse) { setTimeout(function() { sendResponse({status: true}); }, 1); alert("Inside Background.js file"); return true; // Return true to fix the error }); – sasrra Dec 21 '21 at 09:29

airush · Answer 8 · 2019-10-26T10:21:45.007

9

If error reason is extension use incognito Ctrl+Shift+N. In incognito mode Chrome does not have extensions.

UPD. If you need some extension in incognito mode e.g. ReduxDevTools or any other, in extension settings turn on "Allow in incognito"

edited Oct 26 '19 at 10:21

answered Jul 25 '19 at 02:09

airush

722
9
19

Jonathan Lin · Answer 9 · 2019-03-20T03:25:00.857

For those coming here to debug this error in Chrome 73, one possibility is because Chrome 73 onwards disallows cross-origin requests in content scripts.

How to fix 'Unchecked runtime.lastError: The message port closed before a response was received' chrome issue?

18 Answers18

Linked