This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Norton 360 says I need to optimize my C drive.
When I try - It does not complete the process.
Remains 12% fragmented.
Any suggestions on how to fix this.
Worked fine initially when Windows 8.1 and Norton 360 was installed.
Has been a problem for about a week.
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Just try the 3rd party one like defraggler. I've found in the past that these PC Tuneup programs cans cause more problems than they are worth. You may find that once you defrag your drive with the 3rd party one that the Microsoft defrag program may work again like mine did.
Hi Joe, Bitdefender has it's own defragger in the tuneup section so you may want to try that first.
John
Hello, unfortunately I have Bitdefender Internet Security and not Total Security. I never thought I would need their defrag. Maybe I would need to try a 3rd party defrag program like AVG PC Tune Up?
And should I try the other steps provided in this topic?
Hi Joe, Bitdefender has it's own defragger in the tuneup section so you may want to try that first.
John
Hello, I also have this problem. I will try your instructions.
It's not from the AV because I am using Bitdefender not Norton.
Thank you John, the Defragler is now running, and I report back when it is trough (>1day)!
