WMI Connection Semaphore released, connection tainted.

Hello, we are receiving this in conjunction with a cpu load sensor reporting and unrecoverable error. Could you please advise what it is as google is less than helpful. Log snippet below-

28/04/2017 08:56:37 Request: 3392232429 Id: 9244 Running: WMIProcessor on [SERVERNAMEREMOVED]
28/04/2017 08:56:37 WMI Connection Semaphore released, connection tainted.
28/04/2017 08:56:37 Timeout in scan thread 1800, last scan: 28/04/2017 07:36:36
28/04/2017 08:56:37 Callstack
28/04/2017 08:56:37 (0001E8C1){ntdll.dll   } [77DCF8C1] ZwWaitForSingleObject + $15
(0037C238){PRTG Probe.exe} [0077D238] Unknown function at TMethodImplementationIntercept + $30B5BC
(0037C063){PRTG Probe.exe} [0077D063] Unknown function at TMethodImplementationIntercept + $30B3E7
(0037A668){PRTG Probe.exe} [0077B668] Unknown function at TMethodImplementationIntercept + $3099EC
(003593DA){PRTG Probe.exe} [0075A3DA] Unknown function at TMethodImplementationIntercept + $2E875E
(0035917D){PRTG Probe.exe} [0075A17D] Unknown function at TMethodImplementationIntercept + $2E8501
(005DD019){PRTG Probe.exe} [009DE019] Unknown function at TMethodImplementationIntercept + $56C39D
(005DC1BA){PRTG Probe.exe} [009DD1BA] Unknown function at TMethodImplementationIntercept + $56B53E
(004BB984){PRTG Probe.exe} [008BC984] Unknown function at TMethodImplementationIntercept + $44AD08
(0066FC08){PRTG Probe.exe} [00A70C08] Unknown function at TMethodImplementationIntercept + $5FEF8C
(000D2C59){PRTG Probe.exe} [004D3C59] Unknown function at TMethodImplementationIntercept + $61FDD
(00009A24){PRTG Probe.exe} [0040AA24]

cpu-load wmi zwwaitforsingleobject