Download the FREE hotComm CL Client on this page...
Download hotComm CL

hotComm CL is a free stand alone client for Windows.

You can download & install our best revision of the program HERE
& use it in rooms & events on the platform that allow the free application.

hotComm CL Instant Network Access Update

      1. Download/Save the following .zip file
      2. 'Run' or 'Open' the script with the
      hotComm CL program closed.
      3. Look on your PC's Desktop
      4. You should have a *NEW* Desktop shortcut for hotComm 'Quick Connect' to use for startup.

      You should now have almost instant network access.
      5. Test it to launch the hotComm CL program. Confirm that you're connected almost immediately (1 -10 seconds)
      6. Double left click your new (grey/red/blue colored)
      'hotComm CL Quick Connect Client' to launch the program in advance of connecting through their website
      - or with the room 'Target Site' address & room password.

For information on the CL PLUS feature upgrade, which includes recording (and more) click here

How to Install CL

To download and install hotComm CL:

  1. Click the Download hotComm CL button. When you get the File Download window, Select Open or Run, not Save. .
    Do not uninstall before updating.
    Select Open or Run, not Save.
    You MAY need to re-start your computer after some updates.
    The current revision is: 8.00.012x (7.1Mb)

    File Download window

  2. Run the installer (hclsetup.exe). If you selected Run or Open, it starts automatically. Follow instructions in the installation screens.

  3. At the end of the installation program, hotComm starts. If you are a brand new user, please enter a Nickname and valid email address when you are prompted.

    If your privacy or security products challenge hotComm, always allow hotComm to access any site (or grant permission for the software to "make changes" to your computer settings). You can "Unblock", "Allow" or the equivalent when prompted by your security software or firewall.

  4. If you get a message saying you need to update, it usually means that you have a copy of the old installer saved on your computer. Click here for About the Update Notice.

Security and Privacy product note
Check your privacy and security products to make sure that they allow hotComm to access the Internet, and also allow you to access these addresses:,,, For information about some firewall products, see Firewalls.


Only if you are a current CL user, then please read the following.
Introducing CL Plus - an innovative CL license providing unlimited lifetime access to more powerful features.

  • CL Plus users can choose multimedia recording in the industry-standard .wmv format for both audio and charts where permitted instead of just audio.
  • CL Plus users can create custom Abbreviation/Expansion messages to complement the standard set. You can add your own custom .wav files and emoticons.
  • CL Plus users have access to the hotScript feature to isolate transcript postings to display only those from their preferred colleagues.
  • CL Plus users will be highlighted in the Room List as a CL Plus user. Your lifetime CL Plus license one time fee is only $65.95 so install the regular Upgrade then visit our order page and sign up now.

Your lifetime CL Plus upgrade one time fee is only $65.95 visit our order page and sign up now.

Return to How to Install

Test Audio and Connection

  1. Important! To verify that your computer will work correctly with hotComm technology, click this link: Audio Test and wait at least 15 seconds for the pre-recorded message. The hotComm CL password is: test.

  2. Disconnect from the Audio Test room and connect to your room or webinar.

If you have audio problems, click this link to see Trouble Shooting Audio.

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Connect to Room or Webinar

To join your room or webinar, click the link in the instructions given you by the room or webinar organizer.

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About the Update Notice

The Update notice means that your copy of hotComm is not updated to the minimum revision required for the room you want to join. To see your revision number, click Help, then About hotComm CL.

If you get the "Update Required" notice, you probably have an old copy of the installer saved on your computer, and Windows may be running a saved copy of our setup file instead of the new one you just downloaded. To fix this, delete any saved copies of hclsetup.exe, delete Temporary Internet Files, and try again.

Return to How to Install

How to Delete Saved Installers

Find and delete all copies of the installation program (hclsetup.exe):

  1. Open the Windows Start menu. Select Search or Find.

  2. Select Files and folders, and type hclsetup.exe as the filename. Click Search.

  3. Highlight all files that were found and press the Delete key.

  4. Close the search or find windows.

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How to Delete Temporary Files (clear cache)

The instructions below use Windows Control Panel. For instructions for individual browsers, see the Delete Temporary Internet Files FAQ

Windows Vista/Windows 7

  1. Click the Windows Start menu.
  2. Select Control Panel, (or Settings and then Control Panel).
  3. Select Internet Options, (or Network and Internet Connections and then Internet Options).
  4. Under Browsing History, click the Delete button.
  5. In the Delete Browsing History window, check the Temporary Internet Files box, and click Delete. (Note: you may check other items if you wish, but the only one that matters for hotComm is Temporary Internet Files.)
  6. Click Ok

Windows XP

  1. Click the Windows Start menu.
  2. Select Control Panel, (or Settings and then Control Panel).
  3. Select Internet Options, (or Network and Internet Connections and then Internet Options).
  4. Select the General tab.
  5. In the Temporary Internet Files section, click the Delete Files button.
  6. Do not check the clear Offline Content box. Click Ok.
  7. Close the Internet Properties and Control Panel windows.

Return to How to Install

Updated 3/2/12