Cause:

• ActiveX is not working or is disabled on the computer.
• VBScripting is not working on the computer.
• Third party ad-ware, pop-up blockers, or browser plugins may be interfering with normal browser operation.

Follow the steps below to troubleshoot the issue:

1. Verify the operating system and browser you are using are supported on the Webex site the meeting is held on, see:
   • Webex Meetings Suite System Requirements
      
2. If using a supported operating system and browser, download and install the meeting software manually, then try to start or join a meeting again. See:
   • WBX21270 - How Do I Download the Webex Client?

If the issue continues after performing the steps in this article, please contact technical support.