Typically, this is reported after upgrading your PHP Live! system to the latest version and then trying to login as a chat operator using WinApp. To fix the issue, open IE (Internet Explorer) browser and then clear the browser cookie:
Settings -> Internet Options -> General -> Browser history -> Delete... -> check the "Cookies and website data" -> Delete
Re-launch WinApp and see if the issue is resolved.
Was this helpful?
could be more helpful? let us know