SettingsExtensionLauncher.exe on a Samsung Galaxy Book is most likely associated with Samsung’s settings utilities, so update or repair the Samsung software first; error 0xc0000142 means the program failed to start and does not, by itself, indicate a virus.
It is reasonable to turn the laptop back on. Do not delete the .exe file manually.
Verify that it is the Samsung component
- Start Windows and dismiss the message with OK.
- Open Task Manager by pressing Ctrl+Shift+Esc.
- If
SettingsExtensionLauncher.exe appears under Processes or Details, right-click it and select Open file location.
- Right-click the file → Properties → Digital Signatures.
- Check that:
- The location belongs to a Samsung application, commonly beneath
Program Files or the protected WindowsApps folder.
- The signer is Samsung Electronics and Windows reports that the signature is valid.
If the file is in an unrelated location such as a temporary folder, has no valid signature, or Windows Security reports it as a threat, skip directly to the malware scan below.
Repair Samsung Settings
- Open Start → Settings → Apps → Installed apps.
- Find Samsung Settings or a similarly named Samsung settings/extension utility.
- Select ⋯ → Advanced options → Repair.
- Restart the laptop and check whether the popup returns.
- If Repair is unavailable or does not work, return to the same page and select Reset. Microsoft documents Repair and Reset as the supported Windows 11 recovery options for malfunctioning apps.^1^
If the error remains, uninstall that Samsung utility from Settings → Apps → Installed apps, restart Windows, and reinstall the package for the exact Galaxy Book5 Pro 360 model from Samsung’s Galaxy Books Download Center.^2^
Also install pending updates under Settings → Windows Update → Check for updates, then restart.
If you remain concerned about malware
Run Microsoft Defender Offline:
- Save any open work.
- Open Windows Security → Virus & threat protection → Scan options.
- Select Microsoft Defender Offline scan → Scan now.
- The computer will restart and perform the scan outside the normal Windows session. This deeper scan can detect malware that may evade a regular scan.^3^
If repairing Samsung Settings does not resolve it
Repair Windows system files from Terminal (Admin) or Command Prompt (Run as administrator):
DISM.exe /Online /Cleanup-Image /RestoreHealth
sfc /scannow
Allow the first command to complete before running the second, wait until SFC reaches 100%, and restart Windows. Microsoft documents this order for repairing the Windows image and protected system files.^4^
If the executable has a valid Samsung signature but the error continues after reinstalling the Samsung package and repairing Windows, contact Samsung support because the failing component is then within its Galaxy Book utility stack.
References
- [Windows 11](https://support.microsoft.com/windows/apps/repair-apps-and-programs-in-windows#summary)
- Samsung Galaxy Books Download Center | United States/English
- Three easy steps to improve your cybersecurity | Microsoft Support
- [Windows 11](https://support.microsoft.com/windows/deployment/updates-lifecycle/troubleshoot-problems-updating-windows#repair-hard-drive-errors)