This usually happens when a known folder such as Downloads or Documents was pointed to the root of a drive instead of to a normal folder. That can make *C:* or *D:* behave like the special folder.
Try this first for each affected folder:
- In File Explorer, right-click Downloads.
- Select Properties.
- Open the Location tab.
- Select Restore Default.
- Select Apply.
- If prompted to create the folder in the default location, select Yes.
- When asked whether to move all files from the old location, select No.
Repeat the same steps for Documents if it was also redirected.
Important: do not set the location to just C:* or **D:*. If these folders need to live on D:, first create a normal folder such as a dedicated Downloads or Documents folder on D:, then use Location > Move to point to that folder.
If Restore Default does not work, the accepted guidance is to check the folder mapping in Registry Editor. Registry changes are risky and incorrect edits can cause system problems, so back up the registry first.
Because File Explorer is also showing an unusual view, reset its view settings:
- Open File Explorer.
- Select the 3 dots on the top menu and choose Options.
- On the General tab, select Restore Defaults.
- Open the View tab.
- Select Reset Folders and then Restore Defaults.
- Apply the changes, close File Explorer, and open it again.
If the left pane is missing items, in File Explorer right-click an empty area in the left pane and toggle the available view options, or show the navigation pane from View > Show > Navigation Pane.
To reduce the lag on a 64 GB system drive, free space on C: after the folder paths are corrected:
- Go to Start > Settings > System > Storage.
- Turn Storage Sense On.
- Select Storage Sense and choose what temporary files, Recycle Bin items, or Downloads cleanup settings to use.
- Run Disk Cleanup and remove unnecessary files.
Also verify virtual memory is set correctly:
- Open Control Panel.
- Go to System and Security > System > Advanced system settings.
- On Advanced, under Performance, select Settings > Advanced.
- Under Virtual memory, select Change.
- Make sure Automatically manage paging file sizes for all drives is selected.
- Select OK, Apply, and restart.
If the D: drive keeps disappearing, that points to a separate drive or partition issue and is not caused only by the folder location setting. Check Disk Management to review whether the drive and partitions appear consistently.
- Changed defaut downloads to d drive - Microsoft Q&A
- Downloads folder is merged with D: - Microsoft Q&A
- how do i move my libraries (like pictures and music) from C:/ to my mass storage drive D:/ - Microsoft Q&A
- after installing windows 11 my documents and downloads are missing and so is my C drive - Microsoft Q&A
- File Explorer in Windows
- Manage drive space with Storage Sense
- Fix File Explorer if it won't open or start