Application Insights alerts miss incomming exceptions

Vadim Slynko 6 Reputation points
2021-01-15T13:40:03.59+00:00

Hello.
Newly incoming exceptions are not picked up by alerts in Application Insights.
In Investigate -> Failures -> Exceptions I do see an exception registered on 15.01.2021 shortly before noon
57115-screenshot-2021-01-15-142744.png

Yet existing alert is not triggered, and creating new alert for exceptions does not see this exception. I would expect to see that one exception when creating an alert, but it's empty.
56839-screenshot-2021-01-15-142559.png

Thanks in advance

Azure Monitor
Azure Monitor
An Azure service that is used to collect, analyze, and act on telemetry data from Azure and on-premises environments.
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  1. BhargaviAnnadevara-MSFT 5,461 Reputation points
    2021-01-19T12:49:49.163+00:00

    @Vadim Slynko Thanks for reaching out. Please help with the following details:

    • What is the resource type you are trying to monitor?
    • What is the (KQL) log query backing the alert?
    • Please also include a screenshot of the configured alert that isn't working as expected.

    Meanwhile, here is how I was able to create and configure a working log alert from the Azure Portal for one of my Web apps to alert me when a specific type of exception occurs:

    • Navigate to the Application insights resource on Azure Portal.
    • Select Logs under the Monitoring blade.
    • Construct your log query and check the results.
    • Click on + New alert rule.
    • Configure your alert as follows:

    58181-image.png

    The above alert fires whenever the count of results in Custom log search log query for the last 1 day is greater than 0, and is evaluated every 6 hours. You can customize the Period and frequency as needed.

    You can also run through this detailed guide for troubleshooting problems with Azure Monitor alerts. Please check if this helps.