Not all metrics are showing in IIS probe when they should

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)

Issue/Introduction

We are on IIS probe 1.92 and not seeing all the metrics that we should be seeing.

Logs are showing this error: 
Jan 30 05:06:48:393 [9044] iis: Added monitor 'APP_POOL_WAS'/'Current Application Pool State'/'HMGApplicationPool'
Jan 30 05:06:48:393 [9044] iis: Host: localhost Failed to add monitor 'APP_POOL_WAS'/'Current Application Pool State'/'HMGApplicationPool'

Environment

23.4
IIS 1.92

Resolution

Upgrade to IIS 1.93 or later.