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Article ID: 130833, created on May 18, 2017, last review on May 18, 2017

  • Applies to:
  • Operations Automation 7.0


Unable to create new Office365 application instance. Corresponding Provisioning "Office365Application" for APS application Office 365 task fails:

APS Application Error:
403 Forbidden
<title>IIS 8.5 Detailed Error - 403.503 - Forbidden</title> 


The following possible reasons are identified:
1. controller.pem certificate file contains redundant information.
2. 'IP address and Domain Restrictions' IIS site setting is incorrect. It prevents Management Node <-> O365 Endpoint communication.


  1. Make sure controller.pem file contains the only the public part, which starts with "-----BEGIN CERTIFICATE-----" and ends with "-----END CERTIFICATE-----" as per Installing Office 365 Application Endpoint on New Host guide article.

  2. Check the IIS settings according to the Securing Office 365 Application Endpoint Host documentation article.

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