Canon U.S.A. Support or Canon Europe Support .
The official and safest way to download the software is directly from Canon’s support portal. You will typically need your camera's to initiate the download. canon r5 eos utility download
EOS Utility compatibility with both EOS 5D Mark III and EOS R5 Canon U
For the EOS R5, ensure you download EOS Utility 3.x , as version 2 is designed for older legacy cameras. Step-by-Step Installation Guide ensure you download EOS Utility 3.x