
When this error occurs, the most likely reason is that a proxy authentication server on your network is blocking the web requests issued by Power BI Desktop.

The following exceptions in Power BI Desktop trace files are associated with this error: The following screen shows an example of the Proxy Authentication Required error. At the end of this article is a discussion on how to capture a trace in Power BI Desktop, which can help track down troubleshooting issues. Let's take a look at each of those issues in turn. By tracing issues associated with your sign-in problem, administrators can determine which of the following errors apply to you. To determine which problem is causing your sign-in issue, the first step is to contact your administrator and provide diagnostic information so that they can determine the cause of the issue. There are two primary reasons for sign-in trouble: Proxy Authentication errors and Non-HTTPS URL redirect errors.


There may be times when you attempt to sign in to Power BI Desktop but run into errors.
