> For the complete documentation index, see [llms.txt](https://docs.nexthink.com/platform/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nexthink.com/platform/user-guide/applications/monitoring-applications/monitoring-web-applications/performance/reliability.md).

# Reliability

Monitoring and tracking unsuccessful page loads with various error types is another important aspect of Nexthink Applications.

## Reliability metrics <a href="#reliability-metrics" id="reliability-metrics"></a>

* The number of errors represents all browser and HTTP errors caught by the Nexthink browser extension.
* The number of employees represents those who encountered at least one error for a given time period.

***

## Interpreting the Reliability dashboard <a href="#dashboard-widgets" id="dashboard-widgets"></a>

The **Reliability** dashboard contains the following widgets grouped into the sections:

* [#performance](#performance "mention")
* [#top-breakdowns](#top-breakdowns "mention")
* [#other-breakdowns](#other-breakdowns "mention")

{% hint style="info" %}
Use the **Investigate more** right-side panel, which offers predefined drill-down options. These links direct you to investigation results that are relevant to the current dashboard context.
{% endhint %}

<figure><img src="/files/86QXEx4fYQnfM8MH3tAu" alt=""><figcaption></figcaption></figure>

### Performance <a href="#performance" id="performance"></a>

The **Performance** section presents an overview of the application in terms of error metrics.

<details>

<summary>Errors</summary>

Easily check the percentage of navigations with errors and the breakdown for good, average and frustrating navigations.

</details>

<details>

<summary>Errors &#x26; employees</summary>

Check the number of **Errors** recorded in the selected time period and the change of this metric over time.

**Employees with errors** indicates the number of employees impacted by the errors.

</details>

<figure><img src="/files/4e3Md7txU3gCrxgX1khx" alt=""><figcaption></figcaption></figure>

### Top Breakdowns <a href="#top-breakdowns" id="top-breakdowns"></a>

The **Top breakdowns** section displays the list of errors, key pages, URLs, and devices with the highest number of related browser and HTTP errors.

#### List of errors <a href="#list-of-errors" id="list-of-errors"></a>

Investigate the different types of browser and HTTP errors caught by the Nexthink browser extension. The web browser reports a wide range of network error types that the Nexthink browser extension catches and reports to the Nexthink web platform.

* Browser errors - you can get the official list of NET errors for the Google Chrome and Microsoft Chromium-based Edge browsers on the [googlesource.com](https://chromium.googlesource.com/chromium/src/+/master/net/base/net_error_list.h) website. Firefox employs its own set of browser errors, visit their [documentation](https://developer.mozilla.org/) for more information.
* The HTTP errors are part of the following standard response codes: 4xx client errors, 5xx server errors. You can get a detailed list of the status codes on the [wikipedia.org](https://en.wikipedia.org/wiki/List_of_HTTP_status_codes) website.

Refer to the [Common web application errors](/platform/user-guide/applications/setting-up-and-managing-applications/configuring-applications/configuring-web-applications/common-web-application-errors.md) documentation for more information.

<figure><img src="/files/Lb3vAOGprUp4ENf7lX8V" alt=""><figcaption></figcaption></figure>

#### Key pages & URLs <a href="#key-pages-and-urls" id="key-pages-and-urls"></a>

This section presents Key Pages and URLs with the largest number of errors. For each Key page and URL, see the number of errors and impacted employees.

### Other breakdowns <a href="#other-breakdowns" id="other-breakdowns"></a>

The **Other breakdowns** section includes **Organization** and **Errors by other dimensions** widgets.

<figure><img src="/files/pGpKTGETgLanBKbV5T0n" alt=""><figcaption></figcaption></figure>

#### Organization

The **Organization** table displays metrics by your organization's classification. Select the organization level from the dropdown list. Refer to the [Product configuration](https://docs.nexthink.com/platform/latest/product-configuration) documentation for more information on how to define entities and custom classification for your organization.

#### Errors by other dimensions

View and filter errors by additional dimensions such as **Browser and version**, **Operating system** or **Location type**.

Refer to [Configuring geolocation](/platform/user-guide/administration/system-configuration/data-management/environment/product-configuration.md#productconfiguration-geolocationtab) documentation for more information about the geolocation feature.


---

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