PBM Error "Authentication failed: Invalid credentials" when adding machine to one catalog

When attempting to add machines to an existing catalog the process fails immediately with the below error, in Studio. "Machine Failures: domainname\machinename: Failed to create the virtual machine; domainname\machinename. Inner Error: A general system error occurred: PBM error occurred during...

PVS - Unable to add new machines to existing Catalog

Unable to add new target devices to existing catalog using Virtual Desktop setup wizard/Streamed Wizard...