# Installation on Windows

Windows operating systems have stringent file access control. The access control policies affect all users, even those with Administrator permissions.

Executable Prompt

By default, Windows prompts for consent before starting `tibemsd` as administrator. You can disable this elevation prompt for administrator users with the Windows Local Security Policy application. For more information, see the section on changing the elevation prompt behavior here:

http://technet.microsoft.com/en-us/library/cc709691.aspx

If you elect not to disable the prompt, the User Account Control screen opens each time you attempt to start the EMS server. Click Allow to start the application.

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