Good afternoon from the UK.
I have stumbled on this forum after many weeks of searching for a solutin to the EOS utility problem not working in windows 10. It seems that there are many people who have this problem, and a whole raft of possible solutions. SO:-
Original EOS utility from the solutions disk working fine under Win7 with my EOS 5D MkIII.
I can't remember why I had to update the EOS Utility software, but it would not do an auto update and I had to download euw3.4.30 installer from canons website. Problems straight away I got an error message and it would not auto-run when the camera was connected. Contacted Canon for help. This was 31/12/15. So now you know this is not a new problem. Eventually got it working after many software deletes and installs, and using CCcleaner to remove all old bits from the registry. The problem apperared to be a conflict with old software left on the system and causing a conflict, despite Canon insisting that it was not a problem, however it all worked.......... Until the Windows 10 upgrade.
I did the win 10 upgrade and it was fine, except Loads of other applications, particularly Lightroom and TurboCad went pear=shaped and would not function correctly.
Backed files up and did a clean install of windows 10. Re-installed all my software and evrything was working fine, (and much quicker post upgrade) except the EOS utility. This was installed from the original downloaded Canon update. and again would not recognise the cameras.
Canons solution was to uninstall and re-install the software. No Joy.
I then uninstalled the EOS utility update ( EOS utility 2 and 3) For info they are both installed as per a previous post, and installed the original EOS utility from the solutions disk. That worked fine.
Re-installed the EOS Utility update and NO WORK!!!! This was getting frustrating. Back on to Canon UK. that was on the 18th June. After a whole series of emails and no solution I found this forum.
Whilst there was not a particular solution here some peoples experiences set me pointing in the right direction. and this is how I fond the solution to my problem. The steps in diagnosing the problem may help others.
It had not occured to canon to ask about users. My system is set up with an administrator accout which is used for software instalation and maintenance, as per Microsofts reccomendations many years ago.
The update was installed using the administrator account.
More emails to Canon, More uninstalls and re-installs.
I now had 4 instances of the canon camera in my AutoPlay list in settings and it is impossible in win10 to select an aplication on an event. It is also dam near impossible to get rid of the multiple copies of a device. This requires going into the registry and manually deleting them. I had a real difficulty in finding them.
Once ALL the refrences to the EOS utility and the cameras was uninstalled and the registry cleaned I tried installing the Updated EOS utility from the user profile. This was blocked. I Tried changing my user account to an administrator account and installed the EOS utility. This worked fine until I re-set the user accont from administrator to standard user. However it all worked in the administrator account.
Here is the clue to diagnosis.
In your administrator profile start your task manager and look under background processes. You should see EOS utility (32 bit) in the list. This it the program that monitors the USB port for the arival of a camera. Check to see if it is running in your user profile. In my case it was not.
Running the EOS utility in the user profile got evrything working, but the utility then resides in the Apps section. A bit of research on how to get an app to run as a background process and I found it was a simple matter of clicking on the start up tab in the task manager and enabling the EOS utility, this was listed, but shown as disabled. Enable it. Re-start your computer and check.
Hopefully all will be fine with the EOS utility (update) working in the Administrator profile and the user profile as well.
I have no idea why, after a bunnch of emails and several weeks worth of replies from Canon the question of user profiles was not asked. I have no idea if it was necessary to clear out all the old refrences in the registry however it did get rid of multiple occurances of the same devices.
Sorry to be so long winded but the specifics may help someone else.
