PPM "Communication Error" occurs in PPM SaaS Environment without SSO enabled

Products

• Clarity PPM SaaS
• Clarity PPM On Premise

Issue/Introduction

When using the PPM application, we get a "Communication Error" intermittently.  This occurs across all our environments.
This is the error that appears:

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Cause

This problem was caused by a content filtering mechanism being in place in the customer's network environment.  

Environment

CA PPM SaaS
- Having content filtering mechanisms in place
- NOT using the CA PPM SaaS SSO Portal
- SSO Not enabled

Resolution

The recommendation from CA is to exclude the PPM application URLs from any content filtering policies.  After doing so, the problem should no longer occur.