Modifying SRM installer on both sites can actually help at times.
If you have UAC restriction you can go to registry settings on the both the servers and find the registry key "EnableLUA" . This would be set to 1. Modify the value to 0 and reboot the server post that. UAC restrictions should be lifited.
If this is not possible. Download the SRM installer on same server with the exact version. Right-Click run as administrator it will allow you to bypass UAC accordingly.