What should I do if I get the message "No Data" for my .NET monitor
If you see No Data in your .NET monitor, follow the steps below to identify and resolve the issue.
Step 1: Check agent status using the Health Monitor tool
Log in to the respective server, open the APM Insight .NET Agent Health Monitor from the Start menu, and check for any of the following messages:
Message | Cause | Corrective action |
---|---|---|
Agent service is not running |
May be stopped due to antivirus software or manually by the user. |
|
Could not connect to host |
The server is behind a proxy or using an outdated TLS version (versions below 1.2) for communication. |
|
Profiling environment variables not set |
A competing profiler has been installed. |
|
No. of apps included for monitoring - 0 |
Applications to be monitored are either not configured in the APM Insight .NET Agent configuration window or were added after the configuration. |
Open the APM Insight .NET agent configuration window > Applications tab, select applications to monitor, and click Save. This will recycle app pools. |
[IIS Applications tab] |
The limit for advanced monitors may have been reached, or there might be a delay in bill payments. Since the agent communicates every 15 minutes, any license-related issues may not be reflected immediately. |
Make sure you have enough advanced monitor licenses and the correct license keys. Then, go to the %ProgramData%\DotnetAgent folder, delete the apminsight.net.info file, and restart the agent. |
[IIS Applications tab] Monitor is in a Deleted or Marked for deletion state |
Attempting to re-add a monitor after it was deleted from the Site24x7 console. |
Delete the apminsight.net.info file for the corresponding application from the %ProgramData%\DotnetAgent folder, then restart the APM Insight .NET Agent service (this will recycle the application pools). |
Step 2: Check monitor status in the Site24x7 portal
If the Overview page shows No data collected for selected time period.
Cause | Solution |
---|---|
No traffic in the application | Access the application in a browser to simulate transactions. |
Other APM tools conflicting | Go to Control Panel > Programs and Features, check for and uninstall other APM tools (e.g., New Relic, Dynatrace). Then, perform an IISRESET and generate traffic. |
Site selected instead of actual application | In IIS Manager, check if the selected item has both bin/ and web.config. If not, it’s not an application. Reconfigure the agent to monitor the actual application in the Applications tab, save the config, and generate traffic. |
If you incorrectly selected a site (without bin or web.config), a monitor will still be created. You can suspend such monitors from the Site24x7 portal to save license usage.