By default, the maximum monitor threshold is set to 30. If you encounter monitoring failures due to reaching this default threshold, follow the steps below to adjust it.
1. Open the "C:\ProgramData\DotNetAgent\apminsight.conf" file using a text editor such as Notepad.
2. Add or modify the following key to set the maximum monitoring threshold to <your-range>:
max.monitors.threshold=<your-range>
3. After updating the multimonitor threshold, restart the Agent to apply the changes.

Note:
1. Increasing the monitor count beyond the default limit may lead to performance issues, especially when dealing with 1000+ monitors. It is recommended that you carefully consider the performance impact when adjusting the threshold.
2. To mitigate potential performance-related issues, ensure that each IIS application runs in a separate application pool. This isolation can help distribute the processing load more effectively and improve overall system performance.