I have the button to disable it each time I try to attach a document but want it disabled permanently. If I leave it on and click a word doc, I get the can't create work file, etc. messages.
I click organize and try to go down to Folder and Search options but it is grayed out.
Posts
Open up the Regedit and navigate to the following:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
Right click and add a new dword value
Name it "NoReadingPane"
make it a value of 1
restart the explorer process by either rebooting, logging off/back on, or killing the explorer process and restarting it with the task manager.
if this is Greek to you, you can download a run a .reg file that does this for you here.