To Limit Users to One Session

In MYOB Acumatica, you can specify whether the instance prevents users from signing in more than once under the same user name. By default, this option is turned off, and system users can create user sessions (under the same user name and with different user names) until the concurrent user limit is reached. For more information, see License Restrictions for the Number of MYOB Acumatica Users.
Important:
When you save changes to the web.config file, the website is automatically restarted. Make sure that all users are warned about the restart so that they can save their documents in advance.

To Limit Users to Only One Sign-In Per User

  1. Open the web.config file for the site instance. Usually it is located in %Program Files%\Acumatica ERP\<instance name>, where <instance name> is the name of the application instance website.
  2. In the file, find the providers section in membership, which has the following settings (they depend on your website settings).
    <membership defaultProvider="PXActiveDirectorySyncMembershipProvider">
   <providers>
     <remove name="PXActiveDirectorySyncMembershipProvider"/>
     <remove name="MySQLMembershipProvider" />
     <add name="PXActiveDirectorySyncMembershipProvider"
          type="PX.Data.PXActiveDirectorySyncMembershipProvider, PX.Data" 
             mainProviderType="PX.Data.PXDatabaseMembershipProvider" . . . />
     </providers>
 </membership>
  3. Add the <concurrentUserMode> parameter to the line and specify the true value.
    <membership defaultProvider="PXActiveDirectorySyncMembershipProvider">
   <providers>
     <remove name="PXActiveDirectorySyncMembershipProvider"/>
     <remove name="MySQLMembershipProvider" />
     <add name="PXActiveDirectorySyncMembershipProvider"
          type="PX.Data.PXActiveDirectorySyncMembershipProvider, PX.Data"
          mainProviderType="PX.Data.PXDatabaseMembershipProvider" . . .
          concurrentUserMode="true"/>
     </providers>
 </membership>
  4. Save the web.config file, which causes the website to automatically restart.