The investigator is reporting 2 instances for the same .NET application, they both has the same PID number
Why it is listing 2 instances and how to prevent this duplication?
APM Agents .NET 10.7.0
This is by design since there are actually two worker processes for the same application being monitored at the same time.
You can consider disabling the overlapped recycle setting in IIS app pool configuration, but this is not recommended as it can impact the IIS app availability during the recycle period.