The title "Win 10 (10240) Upgrade Keeps Apps From Accessing Their Settings" is my impression of what is happening. The reasons are:
- Skype won't login and it tells me it can't access the profile folder. If I try to browse to C:\Users\username\AppData\Roaming\Skype I get a prompt "click continue to permanently get access to this folder"
- Firefox tells me the profile folder is missing, but it is there, it just can't access it (it wasnt as smart as skype to tell me it is there, it just can't access it).
Some applications go thru their initial preference setup process every time they are started:
- Winamp 5.666 (this one won't even start, it just loops thru the initial setup).
I even uninstalled and reinstalled some of these apps, but the problem persisted.
I've disabled UAC. Then I re-enabled it to see if for example Skype would cause a prompt to access its profile folder. This made no difference.
I ran an SFC scan, but "Windows Resource Protection did not find any integrity violations".
I reset the permissions and enabled inheritance for C:\Users\username\AppData\ to full control for administrators, my_username and SYSTEM. A few files in there couldn't be accessed (failed to enumerate objects in the container. access is denied), so I cascaded ownership of the folder to my_username (still failed for some objects, such as Malwarebytes, but this might be by design as MBAM is a pretty well built piece of software). Then i tried to cascade permissions again. Some folders still gave me the: failed to enumerate objects in the container. access is denied.
To reiterate, everything worked fine under win7 before the upgrade. After the upgrade, it only started working after the permissions reset steps above. Have others encountered the same problem?
The main point to this post is serve as guide to other people who encounter the same problem. But in order to do so, please inform if the permissions outlined above are the proper permissions for 100% of objects in C:\Users\username\AppData\*. I will update the post accordingly.