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Error: "Tried All: '1' Addresses, but Could Not Connect Over HTTP to the Specified Server" When Integrating Prime to P6 EPPM (Doc ID 2382306.1)

Last updated on APRIL 20, 2023

Applies to:

Oracle Primavera Cloud Service - Version 18.2 and later
Information in this document applies to any platform.


When attempting to integrate Prime Projects to an on-premise P6 EPPM via Web Services, the following error occurs when attempting to test the connection: 


Tried all: '1' addresses, but could not connect over HTTP to the specified server.


The issue can be reproduced at will with the following steps:

  1. Connect to Prime
  2. In the object selector, select Global Admin settings.
  3. In the sidebar, select Integration
  4. In the Oracle, P6 EPPM tile, select More.
  5. Select the Connect tab, and then select Add Connections.
  6. Complete the following fields:
    • What do you want to name your connection?: A unique name for this P6 EPPM connection.
    • Server URL: The URL, in the form of http://server:port/p6ws/services/SyncServiceV1 on which your P6 EPPM instance is hosted.
  7. Test the connection
  8. Notice the error




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