If the script reports that the STS certificate is expired, you must regenerate it. Use the vCenter certificate manager utility ( /usr/lib/vmware-vmca/bin/certificate-manager ) or the automated Python fixes provided by VMware support to replace the expired token service certificates. Step 2: Update RVTools to the Latest Version
regsvr32 STSService.dll
Below are the most effective free solutions, ordered from simplest to most advanced. rvtools unknown error stsservicedll free
Right-click RVTools.exe → . This ensures the tool has permissions to load system DLLs.
"C:\Program Files\RobWare\RVTools\RVTools.exe" -s vcenter.company.local -u administrator@vsphere.local -p MyP@ssw0rd If the script reports that the STS certificate
After changing to the RVTools directory, run the command to launch the tool:
Older versions of RVTools lack the updated libraries required to talk to modern, hardened vCenter Server environments. Right-click RVTools
To avoid encountering the RVTools unknown error related to STSService.dll in the future:
Users typically report this error under these conditions: