Hi Dear Customer.
Welcome to the Microsoft Community.
Your Media Creation Tool cannot be opened. I noticed that the size of your Media Creation Tool software is 0KB. Please make sure that the software is downloaded from the official Microsoft website and is not damaged. You can try to re-download the software from the following website and try to open it again:
If the file is complete and safe, but Windows Security still prevents it from opening. You can allow unsafe programs to open in the following ways:
- Press "win + R" to open Run, enter "control.exe", and then press "enter"
- After entering the control panel, go to "Network and Internet"-"Internet Options"
- Go to the "Privacy" tab and uncheck "Enable Pop-up Blocker (B)". Click "Apply (A)" to save the settings.
- Go to the "Security" tab and adjust the "Security level for this zone (L)" slider to "Low". Click "Apply (A)".
- Click "Custom Level (C)" in the "Security Tab". Find "Load applications and unsafe files" and change the option to "Enable (Unsafe)". Click "OK" and then click "Apply (A)" to save the settings.
(Please note that your computer is not protected at this time and is vulnerable to unsafe software. Please restore the above settings after using the software).
Now you can open the software without being warned.
Best Regards,
Raylan-MSFT | Microsoft Community Support Specialist