Tomcat needs to run as an Administrator.
To set Tomcat program to run as an administrator:-
Right-click the file tomcat7w.exe and choose Properties from the shortcut menu. tomcat7w.exe is a GUI application for monitoring and configuring Tomcat services.
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In the Properties dialog, select the checkbox Run this program as an administrator checkbox in the Privilege Level area.
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Click OK.
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Launch RevoDeployR again.