Hi,
You’re absolutely right to ask before diving in, because the folder view and template settings are stored in a few specific registry keys. You’ll mainly want to check permissions on the keys that handle folder "view state" data, which are the ones Windows uses to remember how you set your folders.
Here’s exactly where to look and what to do:
Open the Registry Editor
Press Windows + R, type regedit, and press Enter.
If asked by UAC, click Yes to allow it.
Navigate to these keys (they’re under your user profile):
HKEY_CURRENT_USER\Software\Microsoft\Windows\Shell
HKEY_CURRENT_USER\Software\Microsoft\Windows\Shell\Bags
HKEY_CURRENT_USER\Software\Microsoft\Windows\Shell\BagMRU
These three keys are responsible for storing your folder views, grouping, sorting, and "Optimize this folder for" preferences.
Check Permissions for Each Key
Right-click each folder (for example, Bags) and select Permissions.
Highlight your user account in the list.
Make sure Full Control is checked under "Allow."
If it’s not, click Edit, check Full Control, and then click Apply.
If permissions look correct but the issue persists, the next step would be to back up those keys and then delete the Bags and BagMRU folders so Windows can rebuild them cleanly.
Hope that this helps.
Kind regards,