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Error Code error-subst-to-subst — Windows 11

ERROR_SUBST_TO_SUBST = 139

✅ 65% úspěšnost
👥 0+ uživatelů ověřilo
📅 Aktualizováno: 2026-08-12
⏱️ 5 min čtení
Oprava založena na komunitních zprávách a expertní analýze. Naposledy ověřeno: 2026-08-12 · Jak ověřujeme opravy
Error Codeerror-subst-to-subst
Affected SystemWindows 11 (Microsoft)
DifficultyMedium
Estimated Time5 min

Postup řešení

  1. 1 Press Windows key + R, type 'cmd', and press Enter (or Ctrl+Shift+Enter for admin). This opens Command Prompt.
  2. 2 Type 'subst' and press Enter. This lists all current virtual drive mappings. Look for any drive letter that is already assigned to the folder you're trying to substitute.
  3. 3 If you find a conflicting mapping, remove it with 'subst : /d' (e.g., 'subst Z: /d'). This deletes the existing substitution.
  4. 4 Now you can create the new substitution with 'subst : ' (e.g., 'subst Y: C:\MyFolder'). Make sure the drive letter is not already in use.
  5. 5 Verify the new mapping works by accessing the drive letter in File Explorer.

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