hazelnut, I am having the exact same problem. I am on a Windows 10 upgrade and I did a one time boot defrag and defraggler hangs on the c:\pagefile.sys [ ] 0% So the question is, how do we bypass the one time boot. I looked through the document you suggested and it does NOT address the question in anyway! However, I did find out that if you let it sit there long enough (about 4 minutes in my case), defraggler does eventually finish and the machine finally booted. I looked in the list of files to defrag and the pagefile.sys did not appear in the list so I am guessing the boot time process works, but the screen work in progress display part does not work.