

Select all subkeys under the Statistics key and reboot your computer. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Dfrg\Statistics In the Registry Editor window, locate the following path via the left navigation bar. Press Win + R keys to open the Run dialog box, and then type regedit in it and hit Enter. Here make sure that you back up the registry or create a system restore point in case anything goes wrong. Windows will recreate these keys after you delete them. Some users reported that the “system drive won't optimize” issue can be solved by deleting the corrupt defrag statistics keys. To know more details, you can refer to this post “ Best Defragmentation Software to Handle Disk Fragmentation”. In addition to the Windows built-in tools, you can use third-party defragment software like CCleaner Defraggler, Auslogics Disk Defrag, and so forth. Tip: If you want to defrag an SSD, run the defrag c: /L /O command instead, which can instruct defrag to run a trim command once the operation completes and to run the proper optimization for your media type. Now, let’s see how to fix Windows 10 defrag optimization not available.

They found the Analyze and Optimize buttons can’t be used too, and the Media type status displays “ Unknown”, and the Last analyzed on or Last run column may show “ Never run”. Sometimes, however, you may encounter some issues like disk defragmenter was scheduled using another program, disk defragmenter not working, and the one discussed here.Īccording to user reports, the optimization not available Windows 10 issue occurs when they access the Defragment tool via File Explorer. Run Disk Defragmenter in Safe Modeĭisk Defragmenter is a widely used Microsoft utility that can be used to improve hard disk performance.

This post of MiniTool summarizes 5 effective fixes. If you are also trying to resolve it, you come to the right place. When running the Windows optimization tool, many users encounter the Windows 10 defrag optimization not available issue.
