Blank screen in Bitrix24

Here, we will give some advice on what to do if you get a blank (gray) window without buttons when opening an additional Wazzup chat in Kommo.

First of all, try logging into your Wazzup account using the same machine and browser via the following link: If everything is fine, it means that the error is caused by your browser which is blocking cookies for embedded windows.

To fix this error, disable the feature blocking third-party cookies. Below are the instructions for Google Chrome, Mozilla Firefox, Opera, and Yandex.

Google Chrome

Go to the “Settings” section. It is located in the top right corner of the browser window. To open the full settings, scroll down the page until the end and press “Advanced”. In the “Privacy and Security”, choose “Site Settings”.

Then go to the “Cookies and site data” and allow the following as shown in the screenshot:


  • Go to “Settings”;
  • Click the “Privacy and Security” link in the side panel;
  • In the “Cookies” section, disable the blocking.

Mozilla Firefox

  • In the menu, choose “Content Blocking”;
  • In the “Privacy & Security” panel, review the content blocking settings to enable cookies;
  • Choose the “Standard” mode;
  • it means that cookies are not blocked by the browser.


  • Go to “Settings”;
  • Open the “Sites” section;
  • Click the “Advanced site settings” link;
  • In the “Cookies” section, choose “Allowed”.