Help! How power BI report server (on Premise) communicate with Active Directory?

In the Power BI Report Server, the configuration settings can be found in the file "RSReportServer.config" which is typically located in the following directory:

C:\Program Files\Microsoft SQL Server\MSRSXX.XX\Reporting Services\ReportServer

The settings related to the communication with the local Active Directory can be found in the "<AuthenticationTypes>" section of the RSReportServer.config file. You can replace the "LDAP" value with "LDAPS" in the "<AuthenticationTypes>" section to configure the PBI RS to use LDAPS.

Here is an example of the relevant section of the RSReportServer.config file:

<Authentication>
<AuthenticationTypes>
<RSWindowsNegotiate />
<RSWindowsNTLM />
<RSWindowsBasic />
<LDAPS />
</AuthenticationTypes>
...
</Authentication>

Please note that changing the RSReportServer.config file can affect the behavior of your report server. It is recommended to make a backup of the file before making any changes, and to thoroughly test the changes before deploying them to a production environment.