Optimize your HDD and you can experience speed increases of up to 100%

O&O Defrag Pro

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O&O Defrag Professional 26.0

  -  29.3 MB  -  Trial
Free Download

Security Status

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of O&O Defrag Professional 26.0.


For those interested in downloading the most recent release of O&O Defrag Pro or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download O&O Defrag Professional 26.0

  • O&O Defrag Professional 26.0 Screenshots

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What's new in this version:

New:
- Check & Repair: New in the modern UI is the Check & Repair function. O&O Defrag 26 checks your hard drive or SSD for inconsistencies that can lead to problems. The component memory and the Windows system files are checked for errors. After the check is complete, O&O Defrag will show you whether and which errors were found. Most errors can be corrected directly with the repair function.
- Remove unwanted Apps with O&O AppBuster: O&O AppBuster shows you which apps are installed on the computer, even hidden apps are also displayed. O&O AppBuster lets you remove unwanted apps quickly and easily. Or, if one of these apps was accidentally uninstalled, it can be restored with just one click.
- Brand new in O&O Defrag 26 is a choice of two interfaces: Classic and modern. The Classic is the familiar UI, but we now offer a modern interface, much simpler and streamlined for set and forget fans. Simply choose your style and let O&O Defrag do the rest for you.

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