I have an SSRS report published to Report Manager, available to all Domain Users. The report's stored procedure executes a xp_cmdshell which outputs SQL data to an excel file in a shared file location. The issue is the report can't handle being run concurrently - anyone trying to run the report simultaneously with another user gets a blank file, or, worse, a file with missing data. I can't redevelop the solution right now, what I'm hoping to do is restrict the report to one user at a time, either within the SSRS report, via report manager config or the SharePoint link on our intranet (which users access the report by). Everything is on-prem.
I've tried the report config, RM config, our SharePoint developer and Google and none are helping. Thanks.