HostsCK updated to version

Development of HostsCK stopped in May 2019. The creator of HostsCK sent me the code for the version he
was working on but could not complete due to him having to do other things. Myself and a few others thought
it would be nice to release this version and with the help of  people who offered advice and tested our work we
feel confident of releasing version

What’s changed

  • Improved: The way HostsCK starts has been completely re-written. This makes for a slightly
    faster start time but more importantly reduces the chance for errors.
    The read time for reading the Hosts remains the same
  • Improved: Search for duplicate entries has been made more compatible with Windows 10.
    Some users were getting errors and a program crash. If that happens now HostsCK will check
    for duplicates in a safer way but the GUI will become unresponsive
  • Improved: The language changer is completely re-written and you can now download new
    language files or updates to languages if available
  • Improved: Textbox right-click menu detects if selected text can be saved to the saved sites
    or added to the whitelist more logically
  • Improved: GetIP returns only an IPv4 IP address not IPv6 if IPv6 is enabled on users computer
  • Improved: The way HostsCK comes out of full mode and when exiting the built in browser has
    been re-written so that the transition to the forms normal state is smoother
  • Added: A setting to keep the Hosts writable (Settings > Misc). Useful if your VPN needs
    to be able to write to the Hosts
  • Added: Disable auto adding or to a new line from the right-click menu
  • Added: Ctrl+F in the main text box gives focus to the search box
  • Added: Ctrl+S in the main text box saves the Hosts file. Can be changed in Settings > Input
  • Added: American language file. (Thanks Chris Newman)
  • Changed: About form re-designed
  • Removed: HostsCK no longer checks for Windscribe VPN and keeps the Hosts writable if it is
    detected. This was meant as a temporary fix for several users before the release of version 2.2.9
  • Removed: Delete cookies setting

What’s fixed

  • Fixed: HostsDE not updating the Hosts under certain conditions
  • Fixed: HostsDE not adding whitelist when updating the Hosts
  • Fixed: Edits to the Hosts file were ignored after using the search function. (Thanks Виталий)
  • Fixed: Bug that prevented HostsCK checking for updates to the Microsoft Extra blocks list
  • Fixed: If HostsCK disabled the Hosts file and a VPN created one, HostsCK could not re-enable
    the Hosts. HostsCK will now enable the Hosts from the dis file but changes made by the VPN
    while disabled will be lost
  • Fixed: “Search Next” button text could be missing. (Thanks Liz)
  • Fixed: Write error when saving a site to the whitelist (Thanks Francis Béringer)

I would like to thank red, the developer, for leaving detailed comments in the code on how everything
worked and what needed to be done. Without it we, as non-programmers, would have been lost.

Special thanks to Liz Warren, Chris Newman and Glen Chandler who helped with coding.

Very special thanks to everyone who tested our work.

John Williams (

HostsCK updated to version Final

As the curtain comes down on the HostsCK project due to a new direction in my life, version
is marked as final. No more features will be added and bugs will not be fixed.
This website will remain for 2019 and almost certainly 2020.

The Microsoft Extra list will be updated when needed by John – a long time user of HostsCK.

  • Fixed: Internet Explorer loading when HostsDE checked for a Hosts update
    while a VPN client was connecting or had disabled an internet connection.
  • Fixed: HostsCK crash when launching the Hosts update server in the
    default browser.
  • Added: Autosave setting. Open or drag and drop a Hosts file into HostsCK
    and it will be automatically saved. HostsDE, if set to check for mvps Hosts
    updates, will download and save the Hosts update when an update becomes
    available. Autosave is disabled by default. Go to ” Settings > Backup & Saving ”
    to toggle autosave.
  • Added: shortcut key for full view (F11).
  • Changed: Changed internet connection ping from to as
    several users reported problems with HostsCK and HostsDE detecting
    an internet connection.
  • Improved: Colour schemes re-written. Each scheme is named and the
    scheme colours are extended to other areas of HostsCK in some cases.
  • Improved: Graphical improvements to the built-in web browser.

Following is a list of changes made due to the fact that HostsCK has been marked as final.

  • Removed: HostsCK performance information as it was only used for testing purposes.
  • Removed: Email with bugs and suggestions email client.
  • Removed: Check for program updates.
  • Removed: Error logging.
  • The help file, ListCK and KnockKnock are now included in the install and in this update.

This version of HostsCK is dedicated to the memory of Robert Grant

Thank you to all users of HostsCK over the past 12 years.

Special thanks go to: John, Helena, Jon, Simon P, Andrew and my long-suffering partner Jenny.


HostsCK updated to version

HostsCK has been updated to version

  • Added: Setting in Settings > Input to automatically add and block an address when
    pasting a web address into the text box. E.G. “” is
    pasted as “”.
  • Added: Setting in Settings > Misc to warn that Hosts is disabled when HostsCK exits.
  • Added: HostsCK checks that the Hosts file can be edited and is not locked by
    another program when it starts. See Help.
  • Added: Added font colouring for “# My Saved Sites”, “# Start Of Microsoft Blocks #”
    and “# Start Of EXTRA Microsoft Blocks #” orange, lime and red respectively.
  • Added: “View List” Link to view the Microsoft extra blocks list in your text editor.
    Link is on the “You have the latest version” message box when checking for an
    update to the extra blocks.
  • Fixed: Fixed the English language file getting corrupted during install or
    update in certain cases.
  • Fixed: Fixed a memory leak in HostsDE.
  • Improved: Only the domain name of a web address gets pasted into the
    text box. E.G. “” becomes “”
    when using the Paste menu item to paste a web address into the text box.
    Ctrl+V overrides this behaviour so the full address gets pasted.
  • Changed: Check Hosts is disabled when restoring a Hosts backup until that
    backup has been saved.

HostsCK updated to version

HostsCK has been updated to version

This update fixes the many problems that Windows update KB4481480 caused:

  • Fixed: Completed the fix for the broken visual styling.
  • Fixed: Check for program updates broken.
  • Fixed: HostsCK form flicker when starting.
  • Fixed: Menu items not being translated.
  • Fixed: Some message boxes not displaying correctly.
  • Fixed: Many other small bugs related to the KB4481480 update.
  • Fixed: HostsDE exiting without explanation in Windows 10.
  • Fixed: Hosts file last updated information bar in the built in browser not showing
    for some users. (not due to Windows update KB4481480)
  • Changed: If you chose to include the Microsoft extra blocks list in settings
    the list will be downloaded if it does not already exist.

HostsCK updated to version

HostsCK has been updated to version

This update includes the following:

  • Fixed: HostsCK could become unresponsive when checking for program updates.
  • Fixed: Spelling mistake in message box.
  • Changed: Stronger encryption is used when sending an email using
    “Email with bugs or suggestions”. Also, due to a server-side change,
    the HostsCK email client has been updated.
    The email client will no longer work on earlier versions of HostsCK.
  • Updated: Language files and license.