ArcCatalog does not flush old security tokens from a terminated WMS session

Description

ArcCatalog is not flushing old security tokens from its cache when a connection is lost. This issue affects connections to Web services deployed by ArcGIS Server applications and includes ArcGIS Online Web services. The problem produces a dropped connection to a map service after several hours of inactivity for a previously established connection from ArcCatalog.

Cause

The cause is unknown.

Workaround