How To Fix Webpage Blocked by Extension [Err_Blocked_By_Client]

One of the great advantages of using Google Chrome is its wide capacity to receive and execute extensions or add-ons.  This extends the functionality and versatility of the browser, but in some cases, these extensions can cause multiple errors when working on the browser. For example, a common extension nowadays is AdBlock, or browser security extensions, which can trigger the error ERR_BLOCKED_BY_CLIENT, which is displayed on a particular site visited or currently being worked on. 

How to Correct Err_Blocked_By_Client Error?

Method 1:Disable add-ons to repair ERR BLOCKED BY CLIENT in Chrome

As we mentioned, this error can be generated by errors with add-ons like AdBlock. The first method we will use is to disable the plug-in, restart the browser, and then try to access the website.

Step 1
To disable this extension, we go to the “Customize and control Google Chrome” menu and there we go to the “More tools” / “Extensions” route or it is also possible to enter the following line in a new tab.



Step 2
Once there, we locate the add-on, in this case, AdBlock, and click on the switch located in the lower right to disable it in Google Chrome.

If we wish we can click on the “Details” line and in the new window click on the “On” line to deactivate

Method 2:Add the domains to the whitelist to repair ERR BLOCKED BY CLIENT in Chrome

Step 1: Ad blockers for Google Chrome are arranged with two types of internal lists that are:

Blacklist: There all the websites that will be blocked are hosted

White list: There we can register the websites that will be exempt from the restriction

So one option to use is to add the domain of the visited website to the white list of the add-on, in this case we have two options that are:

Option 1: First of all, when visiting the website we can click on the add-on and click on the option. Don’t run on this page (this option avoids blocking on that particular page) or the option don’t run on page are this site (this option prevents blocking on all pages of that domain):

Option 2: The second option to use is to click on the plugin in Google Chrome and then select Options, then, in the window to which we will be redirected, we go to the CUSTOMIZE tab and there we will enter the website or domains where it will not act The blocker:

Method 3:Remove the Google Chrome plug-in to repair ERR BLOCKED BY CLIENT in Chrome

In case the add-on is disabled, but the problem persists, we can use the option to eliminate it and thus check if it is the root cause of the ERR_BLOCKED_BY_CLIENT error.

Step 1: To remove an add-on of this type from Google Chrome, we go back to the “Customize and control Google Chrome” menu and there we will go to the “More tools” / “Extensions” route, in the pop-up window we locate the add-on and click on the “Delete” button:

Step 2: The following message will be displayed in the upper right corner. We confirm the deletion by clicking again on the “Delete” button.

Method 4:Clear the browser cache to repair ERR BLOCKED BY CLIENT in Chrome

Another option by which this error can be generated is by the accumulation of the cache that the visited websites host in the browser.

Step 1: To empty this cache, we go to the “Customize and control Google Chrome” menu and there we select the “Settings” option:

Step 2: In the next window, click on the “Advanced” line located at the bottom and in the “Privacy and security” section, click on the “Delete browsing data” category:

We can access directly if we paste the following line in a new Google Chrome tab:


Step 3: In the displayed window we define the time from which the information will be deleted and we must activate the “Cookies and other data” box of “sites cached for them to be active. Click on the “Clear data” button to execute the action. After this we can restart the browser and try to access the websites to validate their integrity.

Method 5:Open the site in Incognito mode

Since there is a high probability that the error is caused by a chrome extension cord, you should first check if this is the case.

The easiest way to check if an extension causes the error “This web page has been blocked by an extension (ERR_BLOCKED_BY_CLIENT)” without having to disable everything is to repeat the process that triggers it in an Incognito mode.

Several users who have difficulty solving the same problem have reported that with this procedure, they can confirm that the author is one of the extensions they have installed.

To open a new window in Incognito mode, click on the action menu (three-point icon) in the upper right corner and select New Incognito Window.

Method 6:New installation of the Bookmark Manager extension

If you encounter this problem when using the Google Bookmark Manager extension, you can most likely solve it by simply uninstalling the extension.

The err_blocked_by_client error is closely linked to some type of add-ons since ad blockers integrate some rules which match the URLs with some type of expression or can also match the DOM with the expressions. This results in some false positives being created within the navigation, generating the mentioned error, and preventing access to the visited site.


Several users who had difficulty correcting the same error message reported that the problem was fixed after the extension was reinstalled. It turns out that the error “This web page has been blocked by an extension (ERR_BLOCKED_BY_CLIENT)” is reported together with the bookmark manager if you have more than 100+ bookmarks that are processed immediately when you open the browser. Thus, we have practical solutions to correct the error ERR_BLOCKED_BY_CLIENT and navigate comprehensively in Google Chrome.