After we applied HotFix2, our WPM transactions fail to play. Looking at the logs, it seems that the transaction completes but its status on Web console is 'unknown'. The only entry I see in the logs that looks like an error is this:
2020-12-18 15:04:33,215 [SolarWinds.SEUM.Agent.Worker.exe] DEBUG SolarWinds.SEUM.PingdomRunner.Player - Failed to kill Chromium process ID: 0
System.ComponentModel.Win32Exception (0x80004005): Access is denied
at System.Diagnostics.ProcessManager.OpenProcess(Int32 processId, Int32 access, Boolean throwIfExited)
at System.Diagnostics.Process.GetProcessHandle(Int32 access, Boolean throwIfExited)
at SolarWinds.SEUM.PingdomRunner.Player.TryKillChromium(Int32 chromiumProcessId)
I double-checked and SEUM accounts are in the Administrators group. I can see the steps played in the transaction logs as SEUM-user-#. It worked before HotFix2 and nothing else changed in the environment.