Fix: Error [15] File [atmgr.exe] – Cisco WebEx

If you attempt to join a Cisco WebEx meeting using a URL link, the meeting launches a loading screen but instead you suddenly receive an error message.

Setup was unsuccessful. Please try again.

Error [15] File [atmgr.exe]

You must uninstall and re-install the latest Cisco WebEx software for your web browser.

1. To uninstall Cisco WebEx for your system, follow these guides here.

2. To re-install Cisco WebEx, for Google Chrome – follow this link or for Mozilla Firefox – follow this link.