WMI query - Incorrect class on Windows 2003 R2?📅 Mar 22, 2011 · 📝 Mar 29, 2020 · ☕ 1 min read🏷️#wmi#windows#devopsI got this 'Invalid class' error when querying disk performance data (Win32_PerfFormattedData_PerfDisk_LogicalDisk). The server was running Windows 2003 R2 Std x64 SP2.