For Edge:
- Open Edge.
- Close all InPrivate windows.
- Press Ctrl + Shift + N to open a new InPrivate window.
- Click the Settings and more menu (...) to the right of the toolbar and select More toolsDeveloper tools.
- Click Network.
- Ensure that Edge is recording. A red button indicates that a recording is already in progress. Otherwise, click Record network log.
- Visit the page and complete the steps that trigger the issue.
- When you're finished, click Stop recording network log.
- Click Export HAR (the down arrow icon) or press Ctrl + S to export the file as HAR.
- Save the HAR file.
The HTTP Archive format, or HAR, is a JSON-formatted archive file format for logging of a web browser's interaction with a site. The common extension for these files is .har.
The specification for the HTTP Archive (HAR) format defines an archival format for HTTP transactions that can be used by a web browser to export detailed performance data about web pages it loads. The specification for this format is produced by the Web Performance Working Group of the World Wide Web Consortium (W3C). This document was never published by the Web Performance Working Group and has been abandoned.