Unable to view projects in DevTest Portal

Products

• CA Application Test
• CA Continuous Application Insight (PathFinder)
• Service Virtualization

Issue/Introduction

None of the projects (including bundled examples) are visible in the DevTest Portal.

Getting error:  <Error id="401" message="Authorization failed"> </Error> 

Environment

All supported DevTest releases.

Cause

All Devtest Components were started as executable and as Services.  basically, two processes for each component. 

For example: 
Portal.exe and PortalService.exe were running at the same time. This probably caused locks on the Project folder.   

Resolution

Stopped all the services .  Started DevTest components as Services and not as executable.