Power BI Desktop (Optimized for Power BI Report Server - September 2019) Execution file

Hi aishwarya_sanal !

Microsoft only supports the current release plus the two prior releases for Power BI Report Server, see below;

Power BI Report Server 12 month release lifespan

Sep 19 release is no longer a supported release under a 12 month release lifespan. If you want to keep running older releases that are out of support you need to keep a local copy of the desktop installer as Microsoft removes unsupported versions from their download servers.

Here are the links for supported Power BI Report Server releases;

Microsoft Power BI Report Server- October 2020 

Microsoft Power BI Report Server - January 2021 

Microsoft Power BI Report Server - May 2021 

Regards,

Hasham