We are seeing SPS Exceptions when trying to access any of the tabs in the Proxy UI. The Proxy UI is protected by the Basic Auth Scheme
Secure Proxy Server - Error Report
: SPS Exception
: Web agent has thrown error. More details in SPS logs.
[10/31/2016][15:51:57][25a37615-192df38c-35e1ed52-dc950e9d-a6423e52-8d6][CSmHttpPlugin::ProcessCredentials][Missing required cookies, exiting.]
The requests were missing cookies.
SPS Version: 12.52
You have an ACO parameter called 'requirecookies=yes'. You can change this to 'requirecookies=no'. Recycle the Web Agent and then try the same transaction again. This should solve the issue.