Hi @محمد حازم
For better troubleshooting, you can try to share your configuration or explain a bit more about the issue.
Based on your description it seems the NLB is not making use of the second node for the requests, in this case, check your network infrastructure.
Different Network Load Balancing (NLB) operation modes affect network infrastructure, and the best ways in which the network can support each mode can be found from the below Microsoft article.
Configure network infrastructure to support the NLB operation mode
https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/configure-network-to-support-nlb-operation-mode
You can configure an NLB cluster in one of three operation modes: Unicast, multicast, or IMGP multicast. All three modes work very well if your infrastructure is correctly configured.
Hope this resolves your Query!!
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