Rvtools Unknown Error Stsservicedll Free !new!

Background: RVTools, stsservicedll, and error semantics

You are running an older version incompatible with your current vCenter/ESXi version. rvtools unknown error stsservicedll free

The error referencing STSServiceDLL indicates that RVTools is failing to authenticate with the vCenter Single Sign-On (SSO) service. rvtools unknown error stsservicedll free