: Download the newest version directly from the Dell Live Optics / RVTools portal .
: Broadcom has officially stated that this error is internal to the RVTools application and is not a defect within VMware products. File Location Change
Add the RVTools folder ( C:\Program Files (x86)\RVTools ) to your antivirus exclusion list. Common culprits: McAfee, CrowdStrike, and SentinelOne.
Troubleshooting the RVTools Unknown Error: STSService.dll Guide rvtools unknown error stsservicedll free
The typically occurs due to an underlying version mismatch or dependency breakdown between the RVTools utility, the Remote Desktop Manager (RDM) integration, and the vSphere Management SDK.
errors are triggered by specific internal command-line execution flaws. Check Permissions & Logins
: This is the most promising solution. Instead of calling the .exe from anywhere, change your command prompt's directory to the RVTools installation folder first. : Download the newest version directly from the
If STS token authentication fails, try connecting to ESXi hosts directly (not vCenter), or use a vCenter account with (if your vCenter version allows it). In RVTools, when connecting:
Navigate to C:\Program Files (x86)\ and manually delete the entire Robware folder to ensure no residual cached DLLs remain.
RVTools relies on Visual C++ libraries. Ensure all Visual C++ Redistributable packages are up-to-date, as missing or corrupted versions can cause DLL loading issues. Common culprits: McAfee, CrowdStrike, and SentinelOne
For a deeper look, download the official VMware checksts.py script and run it on your vCenter Server Appliance (VCSA) via SSH.
RVTools relies heavily on Windows .NET libraries to bridge calls to VMware APIs. Corrupted or outdated .NET targets can cause the calling routine to break as soon as it attempts to initialize STSService.dll . Step-by-Step Fixes for the RVTools Error
The in RVTools is almost always related to a mismatch in authentication protocols or outdated components. The fastest path to resolution is:
Ensure any integrated tools (like RDM) are also updated to their most recent versions to resolve library conflicts. Verify CLI Syntax
The STSService.dll is a key component utilized by RVTools to communicate with the VMware VirtualCenter web services. When this fails, it is usually due to one of the following: