Medium Operating Systems ✓ Solution Verified by Community (0+ upvotes)

Error Code error-unexpected-mm-map-error — Windows 11

ERROR_UNEXPECTED_MM_MAP_ERROR = 557

✅ 65% úspěšnost
👥 0+ uživatelů ověřilo
📅 Aktualizováno: 2026-08-12
⏱️ 45 min čtení
Oprava založena na komunitních zprávách a expertní analýze. Naposledy ověřeno: 2026-08-12 · Jak ověřujeme opravy
Error Codeerror-unexpected-mm-map-error
Affected SystemWindows 11 (Microsoft)
DifficultyMedium
Estimated Time45 min
Requires Admin Rights⚠️ Yes
Requires Reboot🔄 Yes

Postup řešení

  1. 1 Run the Windows Memory Diagnostic as described in the previous error. Press Windows key + R, type 'mdsched.exe', and restart to test RAM. Faulty RAM is a common cause.
  2. 2 Update your graphics and chipset drivers. Press Windows key + X, select 'Device Manager', expand 'Display adapters', right-click your GPU, and select 'Update driver'. Also update 'System devices' for chipset drivers.
  3. 3 Run SFC and DISM. Open Terminal (Admin) and run 'sfc /scannow' followed by 'DISM /Online /Cleanup-Image /RestoreHealth'. This repairs system files that might be causing the mapping error.
  4. 4 Check for Windows updates. Press Windows key + I, go to Windows Update, and install all pending updates. Microsoft often fixes memory management bugs.
  5. 5 If you recently installed new software or drivers, try uninstalling them. Press Windows key + I, go to Apps, find the recently installed program, and uninstall it. Then restart and see if the error goes away.

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