The operation 'Get Stats' failed on port

Hi,

I'm getting a error in the server manager on my Hyper-V 2012 R2 server:
Eventid 75 (system log) source: Microsoft-Windows-Hyper-V-VmSwitch,

The operation 'Get Stats' failed on port <number> (friendly name:) on switch <number> (Friendly name: <switch-name>). Status = A non close operation has been requested of a file object with a delete pending..

I'ts a Windows Hyper-V  2012 R2 server with a virtual switch created with SCVMM.

It looks everyting works but this error still once in a while pops-up.