The good news? This isn't a "broken" install—it’s usually a configuration or environment mismatch. Here is how to fix it for free. Why Does This Error Happen?
Sometimes the Windows OS prevents the application from registering or calling the DLL file properly due to User Account Control (UAC). Right-click the RVTools shortcut. Select rvtools unknown error stsservicedll free
The STSService.dll is a critical component RVTools uses to communicate with the VMware Security Token Service (STS). The "Unknown Error" typically triggers because: The good news
If you aren't on the latest version, download it for free at RVTools.com. 3. Run as Administrator Why Does This Error Happen
The is almost always solved by installing the Visual C++ 2013 x86 Redistributable . Once that bridge is built, RVTools can talk to the VMware SSO service, and you can get back to exporting your environment data.