Created On:  10 December 2012

Problem:

Program that uses an ActiveX control works Ok with Windows runtime version 9.1.2.1 when it runs standalone; but with thin client it crashes, the program works Ok with previous Thin Client versions.

Resolution:

The problem is due to the ECN-4159 introduced in version 9.1.2.1, while development still is investigating this problem, the solution is to turn off the runtime configuration variable ECN-4159, like this:   ECN-4159 OFF
Incident #2603362