That session= parameter expires after 15 minutes. That is why you cannot share a single link.
This is the most critical part. Follow this folder path exactly: sap gui 7.70 download link
SAP GUI 7.70 is a significant milestone for SAP users. Released as part of the SAP Front-End Components 7.70, this version represents a major leap in user experience, introducing a redesigned interface, high DPI support for modern monitors, and a host of accessibility improvements. That session= parameter expires after 15 minutes
Enter your S-User ID and password. If you have multi-factor authentication (MFA) enabled, complete that challenge. Do not use a personal email; you must use corporate SAP credentials. Follow this folder path exactly: SAP GUI 7
A: Right-click the downloaded .EXE > Properties > Digital Signatures. You should see a signature from "SAP SE" with a status of "This digital signature is OK."