Article - CS343162

"javax.net.ssl.SSLHandshakeException: Received fatal alert: unknown_ca" is seen when configuring connectivity between Windchill and ThingWorx Platform

Modified: 30-Apr-2021   


Applies To

  • ThingWorx Platform 8.4 to 9.5

Description

  • Failing to establish a connection between a ThingWorx Windchill Connector Thing and Windchill PDMLink
  • Cannot connect to Windchill from ThingWorx Platform
  • What certificate needs to be imported into the ThingWorx truststore to form a chain of trust?
  • Error in <ThingworxStorage>\logs\ApplicationLog.log:
    • [L: ERROR] [O: c.t.w.Things] [I: ] [U: <User>] [S: ] [T: https-jsse-nio-<Thread>] [message: Execution error in service script [<Service>] :: javax.net.ssl.SSLHandshakeException: Received fatal alert: unknown_ca]
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