# \#web-monitoring **URL:** https://community.dynatrace.com/tag/web-monitoring/116.md [Latest](https://community.dynatrace.com/latest.md) · [Categories](https://community.dynatrace.com/categories.md) · [Tags](https://community.dynatrace.com/tags.md) --- ## [URL-based sampling vs excluding web request URLs](https://community.dynatrace.com/t/url-based-sampling-vs-excluding-web-request-urls/45113)
**Author:** [@Enrico\_F](https://community.dynatrace.com/u/Enrico_F)\ **Replies:** 14\ **Last updated:** [June 27, 2026, 4:58pm UTC](https://community.dynatrace.com/t/url-based-sampling-vs-excluding-web-request-urls/45113 "2026-06-27T16:58:19Z")
Currently it seems there are two ways how incoming web requests can be excluded from monitoring globally: via setting “Server-side service monitoring → URL-based sampling” and enabling option “Ignore URLs with specific… --- ## [Missing W3C headers (traceparent/tracestate) on Cross-Origin requests (Auto-injected RUM)](https://community.dynatrace.com/t/missing-w3c-headers-traceparent-tracestate-on-cross-origin-requests-auto-injected-rum/55935)
**Author:** [@jocampom](https://community.dynatrace.com/u/jocampom)\ **Replies:** 1\ **Last updated:** [May 20, 2026, 6:36am UTC](https://community.dynatrace.com/t/missing-w3c-headers-traceparent-tracestate-on-cross-origin-requests-auto-injected-rum/55935 "2026-05-20T06:36:59Z")
Hello Community, I am running a Proof of Concept (PoC) on a web application using the auto-injected RUM agent (created via Experience Vitals / Gen3). Our main goal is to link RUM with our distributed system by standardi… --- ## [How can I find the skipped urls "At least x contributors were skipped because they occurred extremely rarely"](https://community.dynatrace.com/t/how-can-i-find-the-skipped-urls-at-least-x-contributors-were-skipped-because-they-occurred-extremely-rarely/53949)
**Author:** [@runatyr](https://community.dynatrace.com/u/runatyr)\ **Replies:** 3\ **Last updated:** [October 31, 2025, 7:51pm UTC](https://community.dynatrace.com/t/how-can-i-find-the-skipped-urls-at-least-x-contributors-were-skipped-because-they-occurred-extremely-rarely/53949 "2025-10-31T19:51:37Z")
Helllo: we are trying to clean up and verify certain web pages that do not see a high level of use (or any) so it can be removed. When we go to a web service and select “view all request details” we get the list and then… --- ## [Troubleshooting automatic RUM injection failures](https://community.dynatrace.com/t/troubleshooting-automatic-rum-injection-failures/53573)
**Author:** [@MargitM](https://community.dynatrace.com/u/MargitM)\ **Replies:** 0\ **Last updated:** [October 1, 2025, 9:12am UTC](https://community.dynatrace.com/t/troubleshooting-automatic-rum-injection-failures/53573 "2025-10-01T09:12:42Z")
The problem Dynatrace Real User Monitoring (RUM) supports the automatic injection of the RUM JavaScript across a wide range of technologies. When OneAgent is deployed in full-stack monitoring mode, it automatically inje… --- ## [RUM data is assigned to a different application than expected](https://community.dynatrace.com/t/rum-data-is-assigned-to-a-different-application-than-expected/53371)
**Author:** [@MargitM](https://community.dynatrace.com/u/MargitM)\ **Replies:** 0\ **Last updated:** [September 16, 2025, 1:17pm UTC](https://community.dynatrace.com/t/rum-data-is-assigned-to-a-different-application-than-expected/53371 "2025-09-16T13:17:04Z")
The problem When using automatic RUM injection, the application to which RUM data is assigned is determined by application detection rules. Occasionally, however, the captured RUM data may be mapped to a different appli… --- ## [Troubleshooting RUM correlation issues for web applications](https://community.dynatrace.com/t/troubleshooting-rum-correlation-issues-for-web-applications/52848)
**Author:** [@MargitM](https://community.dynatrace.com/u/MargitM)\ **Replies:** 2\ **Last updated:** [August 7, 2025, 5:50pm UTC](https://community.dynatrace.com/t/troubleshooting-rum-correlation-issues-for-web-applications/52848 "2025-08-07T17:50:55Z")
The problem Dynatrace RUM correlates user actions with their corresponding distributed traces to provide seamless end-to-end visibility. This correlation enables features like: Drill-down from the waterfall analysis c… --- ## [Troubleshooting RUM setup issues for web applications](https://community.dynatrace.com/t/troubleshooting-rum-setup-issues-for-web-applications/44598)
**Author:** [@maliborskaya](https://community.dynatrace.com/u/maliborskaya)\ **Replies:** 10\ **Last updated:** [July 16, 2025, 10:55am UTC](https://community.dynatrace.com/t/troubleshooting-rum-setup-issues-for-web-applications/44598 "2025-07-16T10:55:59Z")
The problem After successfully setting up Real User Monitoring (RUM) for your web application, you should begin to see RUM data appear in your Dynatrace environment. If no data is being captured, this guide will help you… --- ## [Debug Web Applications with Fiddler and Dynatrace](https://community.dynatrace.com/t/debug-web-applications-with-fiddler-and-dynatrace/44455)
**Author:** [@maliborskaya](https://community.dynatrace.com/u/maliborskaya)\ **Replies:** 1\ **Last updated:** [December 31, 2024, 7:44pm UTC](https://community.dynatrace.com/t/debug-web-applications-with-fiddler-and-dynatrace/44455 "2024-12-31T19:44:08Z")
Summary: This article explains how to use Fiddler to capture HTTP traffic for web application debugging. It includes steps for integrating Fiddler with Dynatrace troubleshooting workflows. Fiddler is a free web debuggin… --- ## [Web applications: User action data is missing](https://community.dynatrace.com/t/web-applications-user-action-data-is-missing/44565)
**Author:** [@maliborskaya](https://community.dynatrace.com/u/maliborskaya)\ **Replies:** 0\ **Last updated:** [March 21, 2024, 1:50pm UTC](https://community.dynatrace.com/t/web-applications-user-action-data-is-missing/44565 "2024-03-21T13:50:00Z")
If user action data is missing from your monitored web application, you can perform the following checks in Google Chrome with Chrome DevTools open, and then use Chrome DevTools to verify that certain data exists to see … --- ## [Web applications: Sessions are not correctly tagged or metadata is missing](https://community.dynatrace.com/t/web-applications-sessions-are-not-correctly-tagged-or-metadata-is-missing/44530)
**Author:** [@maliborskaya](https://community.dynatrace.com/u/maliborskaya)\ **Replies:** 0\ **Last updated:** [March 21, 2024, 8:00am UTC](https://community.dynatrace.com/t/web-applications-sessions-are-not-correctly-tagged-or-metadata-is-missing/44530 "2024-03-21T08:00:00Z")
If you notice your sessions aren’t correctly tagged or if you have missing metadata, it’s likely due to the application data privacy setting called Do Not Track. For this setting, the Capture anonymous user-session dat… --- ## [Web applications: Sessions are randomly split into shorter sessions](https://community.dynatrace.com/t/web-applications-sessions-are-randomly-split-into-shorter-sessions/44556)
**Author:** [@maliborskaya](https://community.dynatrace.com/u/maliborskaya)\ **Replies:** 0\ **Last updated:** [March 20, 2024, 7:30pm UTC](https://community.dynatrace.com/t/web-applications-sessions-are-randomly-split-into-shorter-sessions/44556 "2024-03-20T19:30:00Z")
When user sessions of your web application are randomly split into shorter sessions, ensure the following. If you configured the cookie domain manually, make sure that it does not overlap with the cookie domain of anot… --- ## [Web applications: Web request isn't linked to its user action](https://community.dynatrace.com/t/web-applications-web-request-isnt-linked-to-its-user-action/44562)
**Author:** [@maliborskaya](https://community.dynatrace.com/u/maliborskaya)\ **Replies:** 0\ **Last updated:** [March 19, 2024, 7:30pm UTC](https://community.dynatrace.com/t/web-applications-web-request-isnt-linked-to-its-user-action/44562 "2024-03-19T19:30:00Z")
If there appears to be a missing link between a user action and its distributed trace, check the following for your web application. Verify that web requests are captured: Make sure that the server handling the web req… --- ## [Web applications: Source actions are missing for subdomain navigations](https://community.dynatrace.com/t/web-applications-source-actions-are-missing-for-subdomain-navigations/44558)
**Author:** [@maliborskaya](https://community.dynatrace.com/u/maliborskaya)\ **Replies:** 0\ **Last updated:** [March 19, 2024, 11:40am UTC](https://community.dynatrace.com/t/web-applications-source-actions-are-missing-for-subdomain-navigations/44558 "2024-03-19T11:40:00Z")
Starting with November 2022, browsers implemented a stricter referrer policy. This resulted in missing subdomain source actions for your applications monitored with Dynatrace. The referrer policy controls the document.r… --- ## [Web applications: "Visually complete" and "Speed index" metrics are not shown](https://community.dynatrace.com/t/web-applications-visually-complete-and-speed-index-metrics-are-not-shown/43784)
**Author:** [@maliborskaya](https://community.dynatrace.com/u/maliborskaya)\ **Replies:** 0\ **Last updated:** [January 25, 2024, 1:20pm UTC](https://community.dynatrace.com/t/web-applications-visually-complete-and-speed-index-metrics-are-not-shown/43784 "2024-01-25T13:20:00Z")
When the “Visually complete” and “Speed index” metrics are not shown for your web application, check the following. Ensure that Visually complete is the key performance metric used for XHR and load actions. Confirm sup… --- ## [Web applications: Inaccurate "Visually complete" and "Speed index" metrics](https://community.dynatrace.com/t/web-applications-inaccurate-visually-complete-and-speed-index-metrics/43786)
**Author:** [@maliborskaya](https://community.dynatrace.com/u/maliborskaya)\ **Replies:** 0\ **Last updated:** [January 25, 2024, 1:10pm UTC](https://community.dynatrace.com/t/web-applications-inaccurate-visually-complete-and-speed-index-metrics/43786 "2024-01-25T13:10:00Z")
The “Visually complete” and “Speed index” metrics can be inaccurate due to the following reasons. IFrames and Frames have their own JavaScript context, so it’s not possible to access variables that are only available i…