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Windows: file delete duplicates

  • Nov 03, 2025
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After a certain amount of time each disk is filled with unnecessary files. How to delete unwanted file duplicates on Windows, you will learn in this practical tip.

Duplicate files under Windows with Anti-Twin clear

  1. Download the free program "Anti-Twin Portable" and open the file. The program starts automatically, it requires no Installation.
  2. At the top, choose a "base" folder, i.e. the folder in which you want to search for duplicates. Recommend individual folder such as "music" or the whole user folder either. Optionally, you can enter including a second folder.
  3. Set include the hook in front of the item "under folder" and click on the Button "file Filter". Here, you can limit the size of the files, or only certain file types allow.
  4. Now you can select which location criteria, the files are to be compared. For example, search for pieces of music, it is recommended in the next item (the methods) to put the Match on a value of approximately 90 percent. This is useful, since duplicates bear a slightly different name.
  5. Then click the Button "scan for duplicate files" will start the process. Depending on the contents of the folder, this may take a few minutes.
  6. Check the search results and click on the left-hand side, the ones that should be deleted. You have made your selection, click below on the Button "delete selected files".
Duplicates Anti-Twin search

Tips to search for duplicate files

  • So that you can clean up your drive effectively, first search for large files. You to restrict, for example, the search results to a minimum of a MByte, so as not to create even space.
  • Select the whole disk, not only take the Scan for a long time: the search result will overwhelm them. Instead, look carefully in the folders in which you suspect are duplicates.
  • Browse and especially do not delete any duplicates from the system folders like "Windows" or "programs". Duplicate files are not uncommon and are often essential for the System.
Also a good result, the program provides "CloneSpy". This, however, is only available in English.

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