How to fix error error-invalid-segdpl in Windows 11

Solution Steps

1. 1 Press Windows key + R, type 'sysdm.cpl', and press Enter. Go to the 'Advanced' tab, click 'Settings' under Performance, then go to the 'Data Execution Prevention' tab. Select 'Turn on DEP for essential Windows programs and services only' and click Apply. This relaxes DEP restrictions that might be too strict for legacy programs.
2. 2 If the error occurs with a specific program, right-click its shortcut and select 'Properties'. Go to the 'Compatibility' tab and check 'Run this program in compatibility mode for Windows 7'. Also, check 'Run this program as an administrator'. Click Apply and OK. This provides the program with the necessary privileges and compatibility settings.
3. 3 Press Windows key + X and select 'Windows Terminal (Admin)'. Type 'sfc /scannow' and press Enter. This scans and repairs system files. After it finishes, restart your PC. Corrupted system files can cause privilege-related errors.
4. 4 Open Command Prompt as administrator (Win+R, type 'cmd', press Ctrl+Shift+Enter). Type 'dism /online /cleanup-image /restorehealth' and press Enter. This repairs the Windows system image, which can fix underlying issues. Wait for it to complete and restart.
5. 5 If the program is a game with anti-cheat, check for updates or reinstall it. Anti-cheat software sometimes uses low-level privileges that conflict with Windows security. Visit the game's official website for the latest version.