https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Eos-Utility-will-not-start/m-p/143891#M20148 indeed I did, I am having to use it via USB at the moment a very temperamental program Thu, 18 Jun 2015 14:01:12 GMT gwhib 2015-06-18T14:01:12Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Eos-Utility-will-not-start/m-p/143848#M20146 <P>I have just updated to Windows 8.1 and the utility has stopped working, &nbsp;worked well via Wi-Fi before, Cannon 6D, I get the screen with the pairing message but it dosen't do anything</P> Wed, 17 Jun 2015 19:55:12 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Eos-Utility-will-not-start/m-p/143848#M20146 gwhib 2015-06-17T19:55:12Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Eos-Utility-will-not-start/m-p/143887#M20147 <P>Did you reinstall EU after you did the Win upgrade? &nbsp;Do so, with the correct win version which you can get at the Canon web site if needed.</P> Thu, 18 Jun 2015 13:18:21 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Eos-Utility-will-not-start/m-p/143887#M20147 ebiggs1 2015-06-18T13:18:21Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Eos-Utility-will-not-start/m-p/143891#M20148 indeed I did, I am having to use it via USB at the moment a very temperamental program Thu, 18 Jun 2015 14:01:12 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Eos-Utility-will-not-start/m-p/143891#M20148 gwhib 2015-06-18T14:01:12Z