Error: 'Error 5: Setup was unsuccessful.'

See article for troubleshooting Error 5 issues when installing Webex.

Error: 'Error 5: Setup was unsuccessful.'

Error 05: Unable to Setup Webex.

Error 5 during Webex installation.I receive an error 5 setup was unsuccessful message when joining a Webex meeting.

These error messages mean that particular .CAB files are being blocked from downloading, or are timing out when downloading.

Changes have been made to network security.


See bullet points below for resolving Error 05:

  • Manually install the plug-in from the Support page of the Webex website. 
  • Network security may be blocking parts of the software download.  This can be tested by bypassing the network security, or using an alternate connection.     
  • If using a Satellite connection, the Windows TCP settings may need to be modified. This can be done by directly modifying the Windows registry or by using a tool with a Graphical User Interface (GUI) such as Dr. TCP.  For more information on how to modify and what settings to use, go to:  (Note that this site is not affiliated with Webex Communications.)

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