I have been running the 64 bit version of Vista Ultimate for about 3 days now. I don’t know if I’ve had this problem from the beginning and I just noticed it or if it just started yesterday. On the desktop I can click and drag to select multiple files. I cannot do so anywhere else. In file explorer I cannot select multiple files by clicking and dragging, using ctrl+click, shift+click, ctrl+a or even through Edit > Select All (It's grayed out on the menu). I simply cannot do it. All these shortcuts work for desktop icons but at no other point can I select multiple files.
I have tried different file listings (tiles, icons, thumbnails) as well as sorting them differently and with no success.
What did I do wrong here?