private void InitializeGlobalMutex()
{
// get application GUID as defined in AssemblyInfo.cs
string appGuid = ((GuidAttribute)Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(GuidAttribute), false).GetValue(0)).Value.ToString();
// unique id for global mutex - Global prefix means it is global to the machine
mutexId_ = string.Format("Global\\{{{0}}}", appGuid);
// edited by Jeremy Wiebe to add example of setting up security for multi-user usage
// edited by 'Marc' to work also on localized systems (don't use just "Everyone")
MutexAccessRule allowEveryoneRule = new MutexAccessRule(new SecurityIdentifier(WellKnownSidType.WorldSid, null), MutexRights.FullControl, AccessControlType.Allow);
// MutexSecurity securitySettings = new MutexSecurity();
SecuritySettings.AddAccessRule(allowEveryoneRule);
}