A SQL Server technology that supports the creation, management, and delivery of both traditional, paper-oriented reports and interactive, web-based reports.
Hi @Ajish Janardhanan ,
Thanks for your detail explanation.
“It seems that upgrade process somehow can’t handle SSL bindings for SSRS service or handles them differently (produces malformed XML configuration for them?) and what you need to do is remove SSL bindings for SSRS in Reporting Services Configuration Manager (see screenshot below).”
I refer to this thread:https://mikerodionov.com/2017/02/unable-to-start-ssrs-sevice-after-upgrading-sql-server-instance/
please take a try,if not worked ,please check your ssrs error log for more detail.