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Copy file name to clipboardExpand all lines: articles/azure-monitor/faq.yml
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1. Search for **Cost Management** and use the **Cost analysis** pane to see forecasted costs.
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1. Search for **Cost Management and Billing** and open the **Billing scopes** pane to see current charges across subscriptions.
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How do I upgrade from older SDK versions?
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See the [release notes](app/release-notes.md) for the SDK appropriate to your type of application.
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- question: How can I change which Azure resource my project sends data to?
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In Solution Explorer, right-click **ApplicationInsights.config** and select **Update Application Insights**. You can send the data to an existing or new resource in Azure. The update wizard changes the instrumentation key in **ApplicationInsights.config**, which determines where the server SDK sends your data. Unless you clear **Update all**, it also changes the key where it appears in your webpages.
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Will I incur network costs if my Application Insights resource is monitoring an Azure resource (i.e., telemetry producer) in a different region?
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You can [use Power BI](logs/log-powerbi.md) to display your request telemetry on a map if you've [migrated to a workspace-based resource](app/convert-classic-resource.md).
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- question: How long is data retained in the portal? Is it secure?
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See [Data retention and privacy](app/data-retention-privacy.md).
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What happens to Application Insight telemetry when a server or device loses connection with Azure?
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The [Application Insights JavaScript SDK](app/javascript.md) doesn't include any personal data in its autocompletion, by default. However, some personal data used in your application might be picked up by the SDK (for example, full names in `window.title` or account IDs in XHR URL query parameters). For custom personal data masking, add a [telemetry initializer](app/api-filtering-sampling.md#javascript-web-applications).
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- question: How do I see POST data in Diagnostic Search?
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We don't log POST data automatically, but you can use a `TrackTrace` call. To do so, put the data in the message parameter. Message parameters have a longer size limit than the limits on string properties, although you can't filter on it.
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Should I use single or multiple Application Insights resources?
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Use a single resource for all the components or roles in a single business system. Use separate resources for development, test, and release versions, and for independent applications.
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* See [How many Application Insights resources should I deploy?](app/separate-resources.md).
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* [Example: Cloud service with worker and web roles](app/azure-web-apps-net-core.md).
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How do I dynamically change the instrumentation key?
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* See [How many Application Insights resources should I deploy?](app/separate-resources.md).
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* [Example: Cloud service with worker and web roles](app/azure-web-apps-net-core.md).
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Can I filter out or modify some telemetry?
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Yes. In the server, you can write:
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* Telemetry Processor to filter or add properties to selected telemetry items before they're sent from your app.
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* Telemetry Initializer to add properties to all items of telemetry.
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Learn more about [ASP.NET, ASP.NET Core, JavaScript (Web), Python](app/api-filtering-sampling.md) or [Java](/previous-versions/azure/azure-monitor/app/deprecated-java-2x#filter-telemetry-in-your-java-web-app).
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What are the user and session counts?
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* If one real user uses your site in different browsers, or by using in-private/incognito browsing, or different machines, they're counted more than once.
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* To identify a signed-in user across machines and browsers, add a call to [setAuthenticatedUserContext()](app/api-custom-events-metrics.md#authenticated-users).
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Why is my instrumentation key visible in my webpage source?
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* This visibility is common practice in monitoring solutions.
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* It can't be used to steal your data.
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* It could be used to skew your data or trigger alerts.
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* We haven't heard that any customer has had such problems.
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You can:
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* Use two separate Instrumentation Keys (separate Application Insights resources), for client and server data.
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* Write a proxy that runs in your server and have the web client send data through that proxy.
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What is the JavaScript SDK performance/overhead?
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For runnable examples, see [Application Insights JavaScript SDK samples](https://github.com/microsoft/ApplicationInsights-JS/tree/master/examples).
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How can I upgrade from the old version of the Application Insights JavaScript SDK?
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For more information, see [Upgrade from old versions of the Application Insights JavaScript SDK](./app/javascript-sdk-upgrade.md).
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What is the ES3/Internet Explorer 8 compatibility with the JavaScript SDK?
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Occasionally, this data might be missing or inaccurate if the user or enterprise disables sending User Agent in browser settings. The [UA Parser regexes](https://github.com/ua-parser/uap-core/blob/master/regexes.yaml) might not include all device information. Or Application Insights might not have adopted the latest updates.
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- question: Have I enabled everything in Application Insights?
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| What you should see | How to get it | Why you want it |
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| --- | --- | --- |
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| Availability charts |[Web tests](/previous-versions/azure/azure-monitor/app/monitor-web-app-availability). |Know your web app is up. |
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| Server app perf: response times, ... |[Add Application Insights to your project](app/asp-net.md) or [install Azure Monitor Application Insights Agent on server](app/application-insights-asp-net-agent.md) (or write your own code to [track dependencies](app/api-custom-events-metrics.md#trackdependency)). |Detect perf issues. |
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| Dependency telemetry |[Install Azure Monitor Application Insights Agent on server](app/application-insights-asp-net-agent.md). |Diagnose issues with databases or other external components. |
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| Get stack traces from exceptions |[Insert TrackException calls in your code](app/asp-net-exceptions.md) (but some are reported automatically). |Detect and diagnose exceptions. |
| Client custom metrics |[Tracking calls in webpages](app/api-custom-events-metrics.md). |Enhance user experience. |
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| Server custom metrics |[Tracking calls in server](app/api-custom-events-metrics.md). |Business intelligence. |
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Why are the counts in Search and Metrics charts unequal?
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See [IP addresses used by Azure Monitor](app/ip-addresses.md) to review our full list of services and IP addresses.
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### Firewall exception
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Allow your web server to send telemetry to our endpoints.
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### Gateway redirect
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Route traffic from your server to a gateway on your intranet by overwriting endpoints in your configuration. If the `Endpoint` properties aren't present in your config, these classes use the default values shown in the following ApplicationInsights.config example.
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