Removing Unused Reports and Dashboards from Private folder
Add the Salesforce Inspector Reloaded in Google Crome Run the below queries and Delete it if required SOQLS: SELECT Id,ownerid,owner.name,owner.isactive, developername FROM Report USING SCOPE allPrivate where owner.isactive = false SELECT Id,ownerid,owner.name,owner.isactive, developername, DashboardResultRefreshedDate FROM Dashboard USING SCOPE allPrivate where owner.isactive = false