If Microsoft Edge fails to open and you have already tried repair and reinstall options without success, it may be due to a known issue. Some users have reported that Microsoft Edge fails to launch, and the issue persists through reboots and updates. In such cases, it is recommended to file a bug report through the Feedback Hub app under the category Install and Update > Downloading, installing, and configuring Windows Update, as there are no known workarounds at this time.
Additionally, ensure that your Windows is up-to-date, as updates may resolve underlying issues affecting Edge's performance.
References: