问题 For all requests in App Insights the property client_Browser is empty for some reason. How can I make App insights populate client_Browser column? 回答1: This feature(client_os, client_browser are populated in app insights) has been deprecated for a long time, see the issue here. As of now, client_Browser is only populated in the pageViews telemetry , but not in request telemetry . Here is the screenshot of pageViews telemetry : If you just want to query the requests based on which browser, you