Bcdedit | -set Testsigning Off //free\\

: If the watermark remains after a reboot, try running these two commands in order within an elevated Command Prompt: bcdedit.exe -set loadoptions ENABLE_INTEGRITY_CHECKS bcdedit.exe -set TESTSIGNING OFF

| Scenario | Application | | :--- | :--- | | | A developer completes testing of an unsigned driver. They turn off Test Mode to ensure the production system only loads signed drivers. | | Removing Watermark | Users who previously enabled Test Mode to run older software (e.g., virtual hardware drivers) can disable it to remove the desktop watermark and restore security. | | Post-Malware Cleanup | Some malware or game cheats enable Test Mode to load malicious unsigned drivers. This command helps restore integrity. | | System Hardening | Administrators disable Test Mode on production systems to prevent accidental loading of untested or malicious drivers. | bcdedit -set testsigning off

To use this command, follow these steps: : If the watermark remains after a reboot,

bcdedit -set testsigning off

| Error Message | Likely Cause | Solution | | :--- | :--- | :--- | | Access Denied | Command prompt not elevated | Run as Administrator | | The boot configuration data store could not be opened | Corrupt BCD or missing system partition | Use bootrec /rebuildbcd | | An error occurred while attempting to delete the specified element | Incorrect parameter name | Ensure testsigning is spelled correctly | | Watermark remains after reboot | Test mode still on or Secure Boot interference | Check bcdedit /enum ; disable Secure Boot if needed (rare) | | | Post-Malware Cleanup | Some malware or