Click under Virus & threat protection settings.
Press Windows Key + R , type regedit , and press Enter to open the Registry Editor.
Go to > Advanced options > Startup Settings > Restart . daemon tools ultra sign check error fix
This is temporary. If it works, the issue is signature-related. You'll then need to permanently allow the driver (see Fix 3).
To clean reinstall: Uninstall the software completely, reboot, and install the newest version from the official website to rewrite the driver signatures. 5. Check the Windows Hosts File Click under Virus & threat protection settings
Press Windows Key + R again, type regedit , and press to open the Registry Editor.
Uncheck (if applicable) or switch to DT internal drivers . This is temporary
Press (or 7) to select "Disable driver signature enforcement".
Once completed, type this command to scan and fix corrupted system files, then press : sfc /scannow Use code with caution.
Note: Disabling Secure Boot reduces system protection against bootkits. Re-enable it after verifying the error is gone.
To exit Test Mode later, run: bcdedit /set testsigning off and reboot.