Official downloads for SAP GUI 7.30 have been removed from the SAP Software Download Center because it is out of maintenance.
Attempting to install SAP GUI 7.30 on a Windows 7 machine today presents significant risks: download sap gui 7.30 windows 7
When SAP released GUI 7.30 in 2011, Windows 7 was the dominant enterprise operating system. Therefore, the kernel and runtime libraries of 7.30 are optimized for Windows 7 (32-bit and 64-bit). Official downloads for SAP GUI 7