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The Tosca REST API installs with Tosca Commander as an Application Pool running on IIS called "ToscaRestApi". Stop and start this Application Pool/Service in Windows Computer Management, in the IIS Manager section.
If configuring an Image File Share on a remote machine, other than the Tosca Server, the ToscaRestApi Application Pool's security must be set up as a defined user, not the default "LocalSystem" account, to access a remote UNC.
Tosca 15: Tosca's Distributed Execution Server installs with Tosca Server as a Windows service called "Tricentis.DistributedExecutionService". Stop and start this service in Task Manager.
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If configuring an Image File Share on a remote machine , other than the Tosca Server, the ToscaRestApi Application Pool's security must be set up as a defined userservice login information must be modified to that of a defined Service Account, not the default, "LocalSystem" account, to access a remote UNC. See the next section about setting up an Image File Share.