Hi PRTG Admin,

My Local Probe Device always not connect and all sensors are grey every 30 minutes. (Pic: https://drive.google.com/open?id=1hhBWpaln14rgTOc7-JzXX5tyw6wzh6uD)

I have fix this problem by Change Mac Scan Setting : https://https://helpdesk.paessler.com/en/support/solutions/articles/76000063731

but it can't solve and always occur this problem. I must restart "PRTG Probe Service" manual and all sensors came back to normal. (Pic: https://drive.google.com/open?id=1J1Xi5lGdAq71nRlYIfm_0i0-tFJfpQ3l)

How can I fix this problem?

Thanks so much Pond.

Article Comments

Hi there,
Are you running PRTG on VMWare by any chance and use VMXNet3 NICs? If so, please disable all TCP offloading options in the device drivers. Note that if you're running teamed NICs (via Windows) it's required and cannot be disabled. In this case, the teaming bond needs to be disabled.

Kind regards,
Stephan Linke, Tech Suppor Team


Aug, 2018 - Permalink

Hi Stephan,

I already Disable TCP Offloading in Windows Server 2012 by disable

  1. IPv4 Checksum Offload
  2. Large Send Offload
  3. TCP Checksum Offload

PS. Large Receive Offload is not appear on my Windows Server 2012 Standard Pic

But it's same and my sensors always grey. How can I fix this problem?

Thanks so much

Pond.


Aug, 2018 - Permalink

More Information: I running PRTG on VMWare and use VMXNet3 NICs.

Best Regards, Pond.


Aug, 2018 - Permalink

Hey Pond,

Thanks for the revert. Please open up a support ticket with support@paessler.com and provide us with a support bundle (best via Setup | Contact Support). Then we'll check what's going on :)

Kind regards,
Stephan Linke, Tech Support Team


Aug, 2018 - Permalink