I have been struggling with this same darn issue and finally found the fix. Follow this link Fix for D&P slow to load MarkT94 Jan 16, 2017 at 8:39 AM I have seen this a few times. Open Explorer. Left-click on File, then select "Change Folder and Search Options. On the General tab, change the pull down for Open File Explorer from "Quick Access" to "This PC". That should take care of it. It's a known issue, but can't remember where the link was.