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Remove the document protection from Word files without knowing the actual password (doesn’t work for files with password protection to open):

  1. Open the Word file in question (doc, docx)
  2. Choose “File”, “Save File As”, and make sure the file format is set to “Rich-Text-Format (*.rtf)”. Close the file in Word (important!)
  3. Open the new Rich-Text file with a text editor (e.g. Notepad or Notepad++). You can do so by dragging and dropping it into the editor window, or choose “File”, “Open File”, and set the file format to “All files (*.*)”.
  4. Find (ctrl-f) “passwordhash” and replace the string that follows with something else (e.g. “nopassword”). Save and close the file in your text editor.
  5. Re-open the modified Rich-Text file in Word, go to “Review”, “Restrict Editing” and click on “Stop Protection” (german version: “Überprüfen” – “Bearbeitung Einschränken” – “Schutz aufheben”). Uncheck all tick-boxes.
  6. Done. You’ve unprotected your Word file without ever knowing the password.
  7. Optional: Convert your file back to its original file format by selecting “File”, “Save As”, and choosing the original file format.

from: http://www.thinkoholic.com/2015/02/16/remove-unknown-password-protected-word-files.

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Forget about spam, advertising mailings, hacking and attacking robots. Keep your real mailbox clean and secure. Temp Mail provides temporary, secure, anonymous, free, disposable email address: https://temp-mail.org.

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Protecting MS Excel Worksheets with passwords can be user-friendly. No one fiddles with the configuration. Yet, if you need to administer the sheets, lost passwords are a pain. So, in case you need to unprotect a sheet – and obviously only if you have the right to do so! – the folling VBA code snippet can help:

Sub LittleMagicPasswordBreaker()
    Dim i As Integer, j As Integer, k As Integer
    Dim l As Integer, m As Integer, n As Integer
    Dim i1 As Integer, i2 As Integer, i3 As Integer
    Dim i4 As Integer, i5 As Integer, i6 As Integer
    
    On Error Resume Next
    For i = 65 To 66: For j = 65 To 66: For k = 65 To 66
    For l = 65 To 66: For m = 65 To 66: For i1 = 65 To 66
    For i2 = 65 To 66: For i3 = 65 To 66: For i4 = 65 To 66
    For i5 = 65 To 66: For i6 = 65 To 66: For n = 32 To 126
    
    ActiveSheet.Unprotect Chr(i) & Chr(j) & Chr(k) _
        & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & _
        Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
    If ActiveSheet.ProtectContents = False Then
        MsgBox "One usable password is " & Chr(i) & Chr(j) & _
            Chr(k) & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & _
            Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
        Exit Sub
    End If
    Next: Next: Next: Next: Next: Next
    Next: Next: Next: Next: Next: Next
End Sub

 
Just open the VBA editor ([Alt]+[F11]), copy the snippet into a new VBA Module of the Excel worksheet, and execute (Run or [F5]).

Credits to: https://www.iseepassword.com/crack-ms-excel-password.html#part1

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