
You can also open the registration dialog under Info from the ribbon bar by clicking Register now.

When the program is started, a summary dialog automatically opens and this gives you the option of opening the registration dialog at the lower left. If you would like to implement O&O Defrag in your company or as a technician for your customers, then please contact one of our resellers or our Sales Department. If you do not enter a valid license key, you will only be able to use O&O Defrag as a trial version with a limited functionality. O&O Defrag needs to be licensed per computer in other words, you have to purchase a license for each computer where you want to employ O&O Defrag. This license key is also called a registration code, serial number, or product ID. In order to activate the product after installation or to gain access to the Full Version at a later time, you must possess a valid license key. Once installation’s completed, O&O Defrag, without any further action on your part, starts working in the background to improve your computer’s performance. This installs O&O Defrag in the standard configuration and sets optimized settings for your computer during the new installation. When you download O&O Defrag from our website or from a link sent by our Online Shop, you receive a simplified installation. To complete the installation of the program, please restart your computer, if you have not been prompted to do so already.

Please read it carefully before the installation - it is binding.


Why do the write access counters of my SSD increase during defragmentation with Solid / Quick and Solid / Complete?.Schedule defragmentation at regular intervals.Differences between the various Editions.
