When I opened and started to work in LightRoom 5.6 on my Windows 7 64-bit PC a notification was displayed in a popup alerting me that a newer version, version 5.7 was available and asked me if I wanted to install it. I clicked yes, and was taken to an Adobe page to download the upgrade. So far, so good. The 976MB “Lightroom_5_LS11_win_5_7.exe” file successfully downloaded. Sadly, when I attempted to run this exe, it failed to complete, displaying the following error message in a popup.
Error 1402.Could not open key:
that you have sufficient access to that key, or contact your support personnel.
While the exe file provided by Adobe did not harm my existing LR 5.6 installation, I “think” I would like to install their Automatic Update, but am unable to do so.
Try to right click on the installer, and choose Run as Administrator.
See if that helps.
Otherwise this looks like a permissions issue, perhaps you don't have write access to your registry?
Try creating a new admin user, and see if you can complete the install successfully there: Create a user account - Windows Help
Hope this helps,