The permissions granted to user ‘domain\user’ are insufficient for performing this operation. —> Microsoft.ReportingServices.Diagnostics.Utilities.AccessDeniedException: The permissions granted to user ‘domain\user’ are insufficient for performing this operation

While using SQL Server Reporting Services (SSRS) with SharePoint, there are plenty of steps to be considered. One of them is the permissions. From SharePoint’s perspective, this article clarifies this point.   However, in my case the situation was kind of different. The SSRS reports were working fine on SharePoint, and suddenly they stopped! Whereas, if you open any report, you…