Hello @Desmond Ogbon ,
Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.
Yes, Network Performance Monitor is being deprecated. Starting 1 July 2021, you will not be able to add new tests in an existing workspace or enable a new workspace with Network Performance Monitor. You can continue to use the tests created prior to 1 July 2021. To minimize service disruption to your current workloads, migrate your tests from Network Performance Monitor to the new Connection Monitor in Azure Network Watcher before 29 February 2024.
Reference:
https://learn.microsoft.com/en-us/azure/azure-monitor/insights/network-performance-monitor
https://learn.microsoft.com/en-us/azure/network-watcher/migrate-to-connection-monitor-from-network-performance-monitor
https://learn.microsoft.com/en-us/azure/network-watcher/connection-monitor-overview
Kindly let us know if the above helps or you need further assistance on this issue.
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