5/30/2023 0 Comments Az292077 msecnd net web slices ie8![]() Although an intermittency failure might still occur in this scenario, a combined bundle does offer a real chance of fixing the problem. You can try to use npm packages to embed the Application Insights SDK together with the monitored application in a single bundle. Therefore, users will probably continue to refresh your site until it loads completely. From the user's perspective, when this exception occurs, your entire application fails to load or initialize, not just the telemetry SDK (that users don't see). Failure of the latter scenario occurs especially if Application Insights is included in a different bundle from that of the application that's being monitored, because the failure is guaranteed to occur in at least one of those bundles. ![]() The same issue affects your own CDN and it occurs also if you use the SDK through an npm package solution. In this situation, hosting the SDK on your own CDN is unlikely to provide or reduce the occurrences of this exception. ![]() Is the SDK load failure exception persistent, and does it occur for many users together with a reduction in normal client telemetry? In this case, intermittent network connectivity issues probably aren't the true cause of the problem, and you should explore other possible causes.Ī common indication that this failure occurs for multiple users is that the exception is reported at a rapid and sustained level. Solution 1b: Use npm packages to embed the SDK together with the application in a single bundle Or, you might see a temporary spike when a new release occurs and becomes generally available (deployed to the CDN). Therefore, you might see a background level of "noise" in the check failure scenario. (See how caching works.) If the caching check fails or there's a new release available, the user's browser has to download the updated version. After the user's browser downloads the current version of the SDK, it doesn't have to download it again because it reuses the previously obtained copy. To minimize intermittent network connectivity failure, we implemented Cache-Control headers on all the CDN files. Solution 1a: Download an updated version of the SDK For example, if the user refreshes the page to reload your site, the files eventually get downloaded and cached locally until the release of an updated version. However, this failure usually resolves itself quickly. If the user experiences intermittent network connectivity failures, there are fewer possible solutions than for other causes. Cause 1: Intermittent network connectivity failure If these conditions don't apply to your scenario, these steps also don't apply. Some of these steps assume that your application has direct control of the Snippet tag and its configuration that's returned as part of the hosting HTML page. The following sections discuss how to troubleshoot each potential root cause of this error. Intermittent network connectivity failure is the most common reason for this exception, especially in mobile roaming scenarios. SDK initialization failure after loading the scriptīlockage of the Application Insights JavaScript CDN Intermittent network connectivity failureĪpplication Insights Content Delivery Network (CDN) outage The following list contains the most common reasons why this exception occurs: This value might help identify whether the public internet or a private cloud accessed the hosting page. ![]() The URL that was used to report the exception. The complete URL of the page that the user was using. The URL that was used (and failed) to download the SDK.Ī URL that links to troubleshooting documentation (this page). The stack details include the basic information about the URLs that are being used by the user. Therefore, those browsers will not report this type of exception unless your environment includes a fetch polyfill. ![]() These browser versions exclude Microsoft Internet Explorer 8 and earlier versions. This exception is supported on all major browsers that support the fetch() API or XMLHttpRequest. ![]()
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