Mark stared at the screen. was his lifeline for reporting, and without it, he was looking at hours of manual data entry he didn't have. He checked the installation folder—the file was missing, likely quarantined by a jumpy security update or corrupted during the last server migration.
Right-click RVTools.exe → . This ensures the tool has permissions to load system DLLs.
If the error occurs exclusively during background automation, scheduled tasks, or under specific service accounts, it is highly likely an execution restriction policy. Open your editor ( secpol.msc ). Navigate to Application Control Policies > AppLocker .
As a last resort, create a local vCenter user with role and disable modern token binding for that user (not recommended for production due to security downgrade): rvtools unknown error stsservicedll free
The STSService.dll assembly is directly tied to the VMware Security Token Service (STS). This component handles programmatic authentication and Single Sign-On (SSO) handshakes between client applications and vCenter.
One of the most frustrating messages appears as:
If none of the above works, the issue may be specific to your vCenter’s SSO configuration – but you can still get your data for free. Mark stared at the screen
The stsservicedll part of the error points directly to and Windows Security components. "STS" typically refers to Security Token Service . In the VMware world, this relates to how vCenter authenticates users—specifically via Single Sign-On (SSO) and token-based authentication.
Your vCenter password contains special characters (like \ ) that RVTools parsing fails to handle correctly, particularly in automated tasks.
due to internal application dependencies or compatibility issues with system libraries. This specific error is often linked to the way RVTools handles authentication or internal automation calls. Broadcom support portal Immediate Solutions Update to the Latest Version Right-click RVTools
This error can be perplexing because the same command often works perfectly when executed manually (by double-clicking the .exe and entering credentials in the GUI).
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RVTools is a free, widely-used utility that allows administrators to collect and export inventory details from VMware environments . However, when it encounters Single Sign-On (SSO) authentication libraries like STSService.dll , it can trigger a sudden crash or throw an unhandled exception error.