Sidebar order in Finder

This is Apple's problem not ours. They can fix it. It's not our job to find a plist file, or even find out what one is. We pay way too much for their hardware etc to be spending our time on forums, with trial and error suggestions by well-meaning amateurs. Where is the professionalism? Get it sorted, Apple.

Thanks jinglow. That's a good idea. I have visited Apple stores in UK, but the English spoken in Apple stores where I live isn't great. And they haven't seemed willing to help people who didn't buy the product at that particular store.

Well instead of loosing your time posting here why don’t you go make an appointment in an Apple store. And don’t let the door slam when you leave.

Bye

I am able to do what you describe. When you move or delete an item in the sidebar does it fail to stick immediately? Does the sidebar revert to its original setup after you close and re-open a window? Does it revert after restarting or logging back in? What kind of account do you use? Admin? General? Managed? (I don't think this should matter.)

Open your library folder (you may need to hold the option key while looking under the Go menu) and then open the Preferences folder. Inside look for and move the com.apple.finder.plist file to another folder. (Protecting it in case this doesn't fix the problem). Now try moving sidebar items and see if they stick. If so, great (It should since the finder.plist is where the information is stored) but you may now need to make a few other adjustments to Finder like changing the text size etc - changes that you have made but lost when starting with a default Finder. If this didn't fix the problem move the original com.apple.finder.plist back into the Preferences folder.