Open the Program Files/Adobe/Adobe Lightroom folder.
Right-click on the Lightroom.exe file then Choose Run as administrator
Go to Pictures/Lightroom folder
Right-click on Lighroom Folder
Choose Properties > Security > Edit.Select your username in "Group or user names". and
Choose Full Control under Permissions.
I updated to Windows 10 on 7/29 and Lightroom was working just fine for me. Until today when Lightroom updated. Then I started getting the "unexpected catalog error". And I tried having it use a backup of the catalog, but it still got the same message. Luckily I found this forum thread and I tried changing the Lightroom.exe attributes and set it to always run as administrator. Browse to the file, right click on properties, go to the compatibility tab, and check "always run this program as an administrator". However, now when I run it I get a warning from User Account Control asking if I want to allow the program to make changes to my system. After click yes it works fine. I'll probably now have to turn off that warning from User Account Control! What happened Adobe?
Updating to windows 10 is changing file and folder attributes for many.This is a known issue and running it as administrator will fix that
Good to kbow it works for you too
Thank you guys so much! I tried your suggestions. I couldn't, actually, do it from the program file, so I had to "run as administrator" from the start menu.
I did find this cool link specifically geared towards Windows 10 (Run as Administrator in Windows 10).
Now I have to go back and read Schaffner's comment in full to see how to get it to run this way all the time without having to do so manually.
I was, seriously, having a mini-meltdown.