This message is displayed because your computer is running in test mode. The test mode watermark can appear if the test signing mode is started on the computer. This test mode may occur if an application whose drivers are not digitally
signed by Microsoft is installed and still in the test phase. Microsoft added test mode to Windows so that users can test programs without having to provide an authentication certificate. The message that is mentioned in the "Symptoms" section is displayed
in the lower-right corner of the desktop when the computer is running in test mode.
Microsoft has three recommended methods of removing this watermark.
Right-click cmd.exe under Programs, and then click Run as administrator.
At the command prompt, type the following text, and then press ENTER: bcdedit /set TESTSIGNING OFF
Close the Command Prompt window, and then restart your computer.
Note If this method does not resolve the issue, go to Method 3.
Method 3 :
Click Start, and then type cmd in the Search box.
Right-click cmd.exe under Programs, and then click Run as administrator.
At the command prompt, type the following commands, and press ENTER after each command: bcdedit.exe -set loadoptions ENABLE_INTEGRITY_CHECKS bcdedit.exe -set TESTSIGNING OFF
Close the Command Prompt window, and then restart your computer.
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