[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12

: Users have reported that upgrading to the latest version of RVTools often resolves STSService.dll errors. You can download the latest version from the Dell RVTools page .

Alternatively, run this PowerShell command as admin to force .NET to use TLS 1.2 globally:

. Version 4.7.1 resolved several crashes, decryption failures, and deserialization issues that frequently triggered unknown errors. Switch to FQDN or IP

In this post, we will dissect the "STSServiceDLL" error, explain why it happens, and provide the steps to "free" your RVTools connection so you can get back to work.

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: This error has been linked to older versions of the tool. Ensure you are running the latest version from the official RVTools site Check Credentials Format : If the error persists during login, try using the format for usernames (e.g., user@domain.com ) instead of the backslash format (e.g., domain\user Devolutions Forum Technical Context Broadcom/VMware Support