I have Corel PhotoPaint X5 running on Windows 7 x64. Every time I save a jpg or jpeg file, the file cannot be shared and appears with a padlock on the bottom left hand corner. To be able to share it, I have to go to the properties of every individual photo and add "Everyone" to the permissions in the Security Tab. Other files save OK. Its only jpg/jpeg files that get locked. Anyone have any ideas how to solve this annoying problem?
I also use PP X5 and have Windows 7 x64 and do not experience the same problem. I suspect the problem is with your OS and not Corel PP. Have you tried checking all the settings in the Network and Sharing Center under Control Panel, choose advanced sharing options, you can also find it by typing the word 'sharing' the Start search box.
When I have a problem with Windows I usually type the problem into Google search and it will often show discussions about similar problems with possible solutions. Good luck.