How can I stop Windows Explorer from changing the case of my filenames?

A. By default, Explorer changes the case of your filenames so that a file you name c:\iLikeTOTypeTHiS appears as c:\Iliketotypethis. Microsoft calls this PrettyPath, and you can disable it by performing the following steps:

  1. Start regedit.exe.
  2. Go to HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced.
  3. Double-click DontPrettyPath (or create this key with a type of REG_DWORD if it doesn't exist).
  4. Set the value to 1 to keep the case as you type it or 0 to adjust the case as Explorer requires.
  5. Click OK.
  6. Close regedit.
  7. Restart the machine.
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