This article was created in response to a support issue logged with K2. The content may include typographical errors and may be revised at any time without notice. This article is not considered official documentation for K2 software and is provided "as is" with no warranties.
You may see the following error when clicking on the K2 Application from a SharePoint list or library ribbon:
Thread 1: No connection could be made because the target machine actively refused it 127.0.0.1:9999
The issue could be caused by incorrect proxy settings for the K2 Service account.
To resolve this issue, please log into Internet Explorer with the K2 Service account and remove the incorrect Proxy Setting.