How to recover: ERR_ICANN_NAME_COLLISION in Chrome

If you are browsing the web using Google Chrome browser on your Windows 10 computer and suddenly get an error message that says “ERR_ICANN_NAME_COLLISION”, keep reading this post to resolve the issue. Here is the full content of the error message:

“The site is inaccessible. This site on the company, organization, or school intranet has the same URL as the external site.” Try contacting your system administrator. NAME COLLISION ERROR.”

There are several ways to fix this error. You can try checking the integrity of the host file or checking the proxy server. You can also try using registry editor and make some changes or delete conflicting browser extensions or clear DNS cache and run a malware scan.

What causes Google Chrome error `ERR_ICANN_NAME_COLLISION` in Windows 10.

What causes Google Chrome error `ERR_ICANN_NAME_COLLISION` in Windows 10.

If you get ERR ICAN NAME COLLISION error message when browsing the web using Google Chrome browser on your Windows 10 computer, you can try to solve the problem in several ways. This problem is caused by a private namespace error or accidental redirection to the wrong proxy server.

The website is inaccessible. The website on the company, organization, or school’s internal network has the same URL as the external website. Try contacting your system administrator. ERR_ICANN_NAME_COLLISION.

How to fix the “ERR_ICANN_NAME_COLLISION” error in Google Chrome on Windows 10

How to fix the "ERR_ICANN_NAME_COLLISION" error in Google Chrome on Windows 10

Check the mandate.

Here’s how you should proceed:

  1. Press the Windows + I logo key on your keyboard to open Windows settings.
  2. Go to the network and the Internet.
  3. Click Proxy.
  4. On the right side of the window, under Use a proxy server, see if the Automatically detect settings option is active.
    If not, activate it. Also, make sure that the “Use proxy server” option is disabled.

After completing these steps, try again to see if you can now access the website. If you can’t, move on to the next solution.

Use the registry editor

Follow these simple steps:

  1. Press the Windows + R logo key on your keyboard to open the Run dialog box.
  2. Type regedit in the text box and press Enter or OK.
  3. In the Registry Editor window, navigate to the following key:
  4. HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesTcpipParametersDataBasePath.
  5. Double-click the Default key and make sure that the value data is set as follows : C:WindowsSystem32driversetc
  6. Restart your computer to apply the changes.
Remove conflicting browser extensions

It is very likely that toolbars or extensions installed in your browser are preventing the site you want to access from loading. To resolve the issue, disable or remove recently installed toolbars or extensions before receiving the error message. You may need to run Google Chrome in safe mode to identify the extension causing the problem.

To start Chrome in safe mode, follow these steps

  1. Start the browser.
  2. Click the “Menu” button in the upper right corner of the window.
  3. Click More Tools > Extensions.
  4. Disable all active extensions in your browser.
  5. Restart the browser.

If the error message still appears after that, try the following solution.

Checking the integrity of the Hosts file
  1. Go to your file explorer and navigate to the following path:
  2. C:WindowsSystem32driversetc
  3. You should find a file called Hosts. Right-click and open the document with a notepad.
  4. Be sure to list the URLs of the locks on your computer.
  5. Save the file.

You may get an error message even if you are logged in as an administrator. If so:

  1. Go to the Start menu and type Notepad in the search box.
  2. Right-click Notepad in the search results and click Run as administrator.
  3. Open the Hosts file and make any necessary changes.
  4. Click Save.

You may also need to manually reset the Hosts file to its default settings. To do this, follow these steps:

  1. Open File Explorer and find the following path:
  2. %systemroot% system32driversetc
  3. Change the name of the host’s file to hosts. bak. You may have to take over the folder first.
  4. To create a new default hosts file, go to the %WinDir%system32driversetc folder and open a new text file named hosts.
  5. Copy and paste the following text into the Notepad file:

Copyright (c) 1993-2009 Microsoft Corp.


# This is an example of a HOSTS file used by Microsoft TCP/IP for Windows.


# This file contains matches between IP addresses and hostnames. Each

# entry must be on the same line # The IP address must be

# is in the first column, followed by the corresponding hostname.

The IP address and hostname must be separated by a # sign and at least one space.

# space.


# In addition, comments (such as these) can be inserted on one line or after the hostname.

# lines or after the hostname marked with a “#”.


# For example:


# # Source: server.

# x host client

# Local hostname resolution is managed in DNS itself.

# local resident

# ::1 local resident

6. Save the text file.

Clear DNS.

1.) To open the WinX menu, move the cursor to the lower-left corner of the desktop and right-click.
2.) To open the extended command line, click the command line (Admin).
3.) To clear the DNS cache, enter the following commands:


4.) Exit the ordering prompt and make sure the error message is cleared.

Frequently Asked Questions

  1. Close other tabs, extensions, and apps.
  2. Restart Chrome.
  3. Reboot your computer.
  4. Check for malware.
  5. Open the site in a different browser.
  6. Fix network problems and report problems with the site.
  7. Fix problematic applications (Windows computers only).
  8. Check if Chrome is already open.

  1. Check the status of the site.
  2. Restart your router.
  3. Clear your browser cache.
  4. Check your proxy settings and adjust them if necessary.
  5. Temporarily disable your firewall and antivirus software.
  6. Clear your DNS cache.
  7. Change your DNS address.

First of all, uninstall or uninstall unwanted software. Then try reinstalling the app, extension, or theme.
If you still can't install the app, extension, or theme, reinstall Chrome.

If you're wondering how to check if an antivirus program is blocking Chrome, the process is similar. Open the antivirus program of your choice and look for a list of allowed programs or an exclusion list. Google Chrome should be added to this list.