It is highly advised to download the SP1 version (ReportViewer.exe), as it includes critical bug fixes and better compatibility with Windows 7, 10, and 11.
If you absolutely still want the original 9.0.0.0 MSI, I can point you to the exact Microsoft KB number and filename, but due to policy — and also because Microsoft removed them for good reasons. microsoft.reportviewer.common version 9.0.0.0 download
