azure application insights showing duplicate transaction logs

Question

I didn't find Tag for ApplicationInsight so using azure monitor instead.

Azure Application Insights is showing duplicate entries in Transaction search. Application Insights has LogAnalytic workspace. It is configured correctly, but not sure why duplications. LogAnalytic configuration is applied through Azure Policy. THANKS FOR YOUR HELP in advance

Answer 1

Hi Arif Usman

Duplicate entries in Azure Application Insights can occur for a couple of reasons, especially when using Log Analytics workspaces. One common cause is when both the default telemetry pipeline and Diagnostic Settings are configured to send the same data to the workspace. This can lead to duplicate results in your queries.

To avoid this, ensure that you do not configure Diagnostic Settings to send data to the same workspace that already collects Application Insights data. If you need to export data to a different workspace, consider using a Data Collection Rule (DCR) with a transformation and a custom table. This setup can help filter the data before ingestion and prevent duplicate records in your queries.

Additionally, if you have multiple agents (like both the Log Analytics agent and Azure Monitor Agent) installed on a virtual machine, this can also lead to duplicate records. In this case, you may need to configure your Log Analytics workspace to avoid collecting data that is already being collected by the Azure Monitor Agent.

Kindly let us know if the above helps or you need further assistance on this issue.

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