Network connection loss on VM -

fxbt · Sep 4, 2023

Hello together!

I had some problems with windows update that have successfully been fixed with help of Maxstar. Unfortunatly there still remain issues with the network connectivity. The problem occurs mainly in the afternoons between 15 and 1730 oclock but also some network connection issues happen during day.
The VM is a Server 2016 Standard on a Windows Server 2016 Standard Hyper-V Host on a HP Proliant Server. The networkcard is a 10G Intel X710. Before last week it was a HP Flex lwl 10G card, this was replaced because of the numerous network problems. We also exchanged the fiber cables and the network switch against new cable and a new ubiquiti 48 pro switch with new sfp+ modules. So involved hardware (except mainboard/cpu) was already replaced.

As seen here, the vm itself seems to have problems to reach itself via the network. via localhost the netdrive can be reached. also external networkdrives can be reached. Teamviewer works also. But clients in same network also cannot reach the network shared of the server. I dunno what do anymore at the moment. sfc and dism are ok. Whats strange is that it happens no matter if i use 1G mainboard networkadapter or 10G intel adapter. Another thing: hyper-v production checkpoints are failing due to timeout.

ipconfig /all is attached. Firewall is a sophos xgs, no other machines seem to have network connectivity issues. antivirus is sophos intercept x.

I would appreciate any help. i can of course provide any windows logfiles that might be helpful.

Greetings!

fxbt · Sep 4, 2023

This is the error when creating a production snapshot.

translation:

Failed to create a checkpoint for the selected VMs.
checkpoint operation failed,
"MK-ZP-RDS": Failed to initiate a checkpoint operation.
Checkpointing operation for 'MK-ZP-RDS' failed. (Virtual machine ID:
A4F7EE51-34F2-4B3F-BDEC-83FB345F81A8)
A checkpoint operation could not be initiated by 'MK-ZP-RDS': This operation returned because it timed out. (Ox800705B4). (Virtual machine ID:
A4F7EE51-34F2-4B3F-BDEC-83FB345F81A8)

xrobwx71 · Sep 14, 2023

I'm not well-versed in VMs. I'm sorry you've been waiting so long.

@Tekno Venus @x BlueRobot @Will Watts

I found this: How to Fix the Error: Hyper-V Checkpoint Operation Failed

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Network connection loss on VM -

fxbt

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fxbt

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xrobwx71

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