O&O Defrag 21 Professional Edition Download free and get maximum performance for your PC
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Frequently Asked Questions about Downloads
You’d like to unlock a test version into a full one?
Once you have a license for O&O Defrag 21 Pro, download the test version. You’ll then be able to enter your license code to convert your test version into a full one.
You have an older version of an O&O Defrag?
Note: You will not be able to use the registration information from a previous version to unlock a current one.
Are you interested in getting the new version? Then simply click here to get a personal offer! Please have your current license number to hand.
You want to use O&O Defrag on a Windows Server?
The O&O Defrag 21 Professional Edition may only be used on desktop or notebook systems. Servers require the O&O Defrag Server Edition