How to fix Google Chrome "Failed to load extension" error in Windows?

Failed to load extension is Chrome saying that it was told to load an extension from a folder on your disk and could not. The window names the folder and the reason. Read those two lines first: they decide whether you fix a shortcut, pick another folder or repair a Web Store extension.

Facts checked on 15 October 2026. Steps written for Chrome on Windows 11 (screenshots of the Extensions page, the About Chrome page and the reset dialog). The Failed to load extension window itself was not reproduced by us; its text is quoted from Google's documentation and from user reports..

What "Failed to load extension" means in Chrome

Chrome installs extensions in two ways. An extension from the Chrome Web Store is packed, signed and kept by Chrome in your profile. An unpacked extension is a plain folder somewhere on your disk that Chrome reads every time it starts. The message Failed to load extension belongs to the second kind: Chrome went to the folder and could not use it.

The window holds two lines. File is the path of the folder Chrome tried. Error is the reason. The reason people search most is Manifest file is missing or unreadable, followed by Could not load manifest. Every extension needs a file called manifest.json in the top level of its folder. Google's developer guide calls that the only fixed rule of an extension's structure.

What causes the Chrome extension error, from most to least likely

Google publishes no numbers for this message. The order below follows how the message is produced and what readers of this page search for. Each cause is tied to one fix.

How to fix the Failed to load extension error in Chrome

Fix 1 takes a minute and tells you which case is yours. Fix 2 is for the window at every start, Fix 3 for developers and anyone who used Load unpacked, Fix 4 and Fix 5 for Web Store extensions. Fix 6 and Fix 7 are for an error that keeps coming back.

Fix 1. Read the File and Error lines and check whether the folder exists

2 minutesNo riskEveryone who sees the window and does not know where it comes from.

The window already names the folder and the reason. Whether that folder exists, and whether you ever chose it, separates a broken shortcut from a broken extension folder.

1. When the window appears, read the path after File and write it down before you close the window.
2. Read the text after Error. Note whether it says Manifest file is missing or unreadable or names another file.
3. Press Win + E to open File Explorer, paste the path into the address bar and press Enter.
4. If the folder opens, look for a file called manifest.json directly inside it, not in a subfolder.
5. Note the moment the window appears: at every Chrome start, or only after you selected Load unpacked.

Fix 2. Remove the leftover start switch from the Chrome shortcut and update Chrome

5 minutesLow riskThe window appears every time Chrome starts and names a folder you never chose.

Chrome only loads a folder at start-up when something tells it to. That instruction is visible in the command line Chrome was started with, and it usually lives in the target of a shortcut. Chrome 137 and later also ignore the --load-extension switch.

1. Open Chrome, type chrome://version in the address bar and press Enter.
2. Read the row Command Line. If it contains --load-extension= followed by a path, a shortcut or program adds it.
3. Close Chrome. Right-click the Chrome shortcut you use on the desktop and select Properties.
4. On the Shortcut tab, read the Target box. Delete everything after chrome.exe", then select OK.
5. If you start Chrome from the taskbar, right-click its icon, right-click Google Chrome in the menu, select Properties and do the same.
6. Open Chrome, type chrome://settings/help and press Enter. Chrome checks for an update and offers Relaunch when one is installed.
7. Open chrome://version again and check that the Command Line row no longer holds the switch.

A clean Chrome shortcut target on Windows (default install path)

"C:\Program Files\Google\Chrome\Application\chrome.exe"

Fix 3. Load the folder that holds manifest.json (Load unpacked)

5 minutesNo riskYou use Developer mode and Load unpacked, for your own extension or one you downloaded as a ZIP, and the error names the manifest.

Chrome reads manifest.json from the exact folder you select and nowhere else. A ZIP file, a parent folder or a folder unpacked inside another folder of the same name all give the manifest error.

1. If the extension came as a ZIP file, right-click it in File Explorer, select Extract All and then Extract.
2. Open the extracted folder. If you see only one folder inside, open it, and repeat until you see manifest.json in the list.
3. In Chrome, type chrome://extensions in the address bar and press Enter.
4. Turn on the Developer mode switch at the top right.
5. Select Load unpacked, go to the folder that shows manifest.json and select Select Folder.
6. If the extension appears with an Errors button, select it to read which file or line failed.
7. After you change a file, select the reload arrow on the extension card so Chrome reads the manifest again.

• The manifest exists but cannot be read. Open manifest.json in Notepad. A missing comma or quote makes it unreadable. A downloaded extension should be downloaded again rather than edited.
• The manifest names a file that is missing. The Error line then names that file, such as an icon or a script. Put the file back or remove it from the manifest.
• You moved or renamed the folder. Chrome keeps the old path. Select Remove on the old card and load the folder again from its new place.

Fix 4. Repair a corrupted extension on the Extensions page

2 minutesLow riskAn extension card says the extension may have been corrupted, or Chrome shows This item appears to be corrupted. You can repair it to get it working again.

Chrome checks the files of Web Store extensions. When they no longer match, it turns the extension off and offers a repair that downloads a fresh copy. Your settings in the extension may be kept or not, depending on the extension.

1. In Chrome, select More (three dots) at the top right, then Extensions and Manage Extensions.
2. Find the extension marked as corrupted.
3. Select Repair.
4. Confirm with Repair extension.
5. Restart Chrome and check that the card no longer shows the warning.

Fix 5. Remove the extension and add it again from the Chrome Web Store

5 minutesLow riskA Web Store extension is off and will not turn on, does nothing, or Chrome extensions are not loading after a repair.

A fresh install replaces every file of the extension and asks for its permissions again. Before you do it, check whether Chrome turned the extension off on purpose, because then a reinstall does not help.

1. Open chrome://extensions and select Details on the extension. Read any note about why it is off.
2. If the note says the extension is no longer supported, look for Find Alternatives in its menu: Chrome may disable extensions that do not meet current requirements, and re-enabling is only temporary.
3. If the browser says it is managed by your organisation, the extension may be blocked by policy. Ask your administrator instead of reinstalling.
4. Otherwise select Remove, then Remove again to confirm.
5. Open the Chrome Web Store, find the extension and select Add to Chrome, then Add extension.

Fix 6. Scan for unwanted software when the error keeps coming back

15 minutesLow riskThe start-up switch returns after you cleaned the shortcut, or an extension is corrupted again after a repair.

Google removed the start-up switch because unwanted software used it to load its own extensions, and Google's help names a suspicious program as the cause of repeated corruption. A scan finds such a program outside Chrome.

Run a quick scan first and a full scan if the quick one finds nothing. Step by step: How to scan for malware with Microsoft Defender.

1. Open Settings > Apps > Installed apps and sort the list by install date.
2. Uninstall programs you do not know that appeared around the time the window started. Step by step: Uninstall a program or app in Windows.
3. Run the Microsoft Defender scan from the procedure above.
4. Open chrome://extensions and remove extensions you did not add yourself.
5. Restart Windows and open Chrome.

Fix 7. Reset Chrome settings as the last step

5 minutesRead the warningYour own PC, the earlier fixes did not stop the error, and you are ready to turn your extensions on again one by one.

The reset turns off every extension, resets Chrome's shortcuts and clears the start-up settings in one step. Turning extensions on one at a time afterwards shows which one fails.

1. Select More (three dots) at the top right, then Settings.
2. Select Reset settings in the left menu.
3. Select Restore settings to their original defaults.
4. Read the list in the box, then select Reset settings.
5. Close Chrome completely and open it again.

Then open chrome://extensions, turn on one extension, restart Chrome, and repeat. The extension after which the error returns is the one to remove.

Chrome still shows Failed to load extension: what to check and who can help

If the window survives the fixes above, the instruction to load the folder comes from outside Chrome's settings. Collect what Chrome itself records before you ask for help.

1. Copy the rows Command Line, Executable Path and Profile Path from chrome://version.
2. Copy the exact File and Error lines of the window.
3. For an unpacked extension, open the Errors button on its card and copy what it lists.
4. Check whether the browser says it is managed: select More and look for Managed by your organization at the bottom of the menu.

How to keep the Chrome extension error from coming back

Most cases of this window are one leftover instruction or one moved folder. Once you know which folder Chrome wants, the fix takes minutes.

Frequently asked questions

Why does Chrome say Failed to load extension every time it starts?

Because something starts Chrome with an instruction to load an extension folder, and that folder is gone or has no manifest. Usually the instruction is the --load-extension switch in the target of a Chrome shortcut, left behind by a program or a tutorial. Open chrome://version and read the Command Line row: if it holds the switch, clean the shortcut as in Fix 2. Google removed the switch from branded Chrome in version 137, so updating Chrome also stops it from loading such folders.

What does Manifest file is missing or unreadable mean?

It means Chrome found no manifest.json in the top level of the folder, or found one it could not parse. Every extension needs that file directly in its folder. The usual causes are selecting the parent folder, loading a ZIP file that was not extracted, or a folder unpacked inside a folder of the same name. A missing comma or quote in the manifest also makes it unreadable. Fix 3 shows how to find and select the right folder.

What does This item appears to be corrupted mean for a Chrome extension?

Chrome noticed that the files of a Web Store extension changed on your disk and turned the extension off. Chrome offers a repair: open Manage Extensions, select Repair on that extension and confirm. If it is corrupted again soon after, Google's help says a suspicious program may be changing its files, so run a malware scan and repair once more. Fix 4 and Fix 6 cover both steps.

Why are my Chrome extensions not loading or not opening?

When there is no Failed to load window, Chrome has usually turned the extension off on purpose. Open chrome://extensions and select Details. An unsupported extension is disabled because it no longer meets Chrome's requirements, and Google's help says it can only be re-enabled for a limited time. On a work or school PC your organisation may block extensions. Otherwise remove the extension and add it again from the Chrome Web Store, as in Fix 5.

What is the Error loading the extension! message?

That exact wording is not Chrome's own window. It appears inside the pages or pop-ups of some extensions when their own code fails to start. Chrome's message is Failed to load extension, with File and Error lines. If you see the other text, remove the extension and add it again (Fix 5), and if it continues, contact the extension's maker through its Chrome Web Store page.

What does Couldn't load plugin mean in Chrome?

It is a different message from this page's error. A plugin is not an extension: Chrome uses the word for built-in viewers, the PDF viewer above all. Plugins are not loaded from extension folders, so the fixes here do not apply to it. We did not research that message for this page. Updating Chrome on chrome://settings/help is a safe first step, and a PDF that still fails can be downloaded and opened in another viewer.

What is An add-on for this website failed to run?

That message does not come from Chrome. It is shown by Internet Explorer and by Microsoft Edge pages opened in Internet Explorer mode, when an ActiveX add-on is blocked. This page is about Chrome extensions, so its fixes do not apply. Chrome has never run ActiveX add-ons. If a site asks for one, it is built for Internet Explorer only, and its owner or your administrator has to tell you how to open it.

What does FAILED_TO_COPY_EXTENSION_FILE_TO_TEMP_DIRECTORY mean?

It is an install error that people report when they drag an extension file onto the Extensions page. As the name says, Chrome could not copy the file to a temporary folder before installing it. We could not confirm the exact causes from a Google document. The reliable way around it is to install the extension from the Chrome Web Store, or, if it is your own extension, to extract it and use Load unpacked as in Fix 3.

What is chrome-extension://invalid/ net::ERR_FAILED?

It is a line in the developer console, not a window that Chrome shows to users. It appears when a web page or an extension asks for a file of an extension that Chrome does not let it reach, for example one that is not installed or not allowed for that page. It does not break Chrome. If you are not developing a site or an extension, you can ignore it. We could not confirm every case that produces it from a Google document.

Does reinstalling Chrome or clearing the cache fix Failed to load extension?

Usually not. The cache holds copies of web pages, not the folder Chrome is told to load. A reinstall keeps your profile and does not touch a shortcut that another program changed, so the window often returns. What helps is removing the instruction (Fix 2), pointing Chrome at the right folder (Fix 3), or repairing the extension (Fix 4). A settings reset (Fix 7) is the strongest Chrome-side step.