CFB files are created when Disk Drill can’t determine for sure if the recovered item is XLS, XLSX, DOC, DOCX, PPT, PPTX or other MS Office file after a Deep Scan.
CFB stands for “Microsoft Compound File Binary”. If you come across such files after successful recovery, try renaming them with the file type they originally were:
We are working on improving our file type detection algorithms. Based on our tests, in 90% of recovery scenarios Disk Drill is able to detect the correct type of the MS Office file. But if you get a CFB file, renaming it often solves the problem. If it doesn’t, it’s possible that the recovered file was corrupted. See Troubleshooting Scan Results for more information on opening recovered files.
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