The DDE Server Interface is not working

The DDE Server Interface is not working. Use these steps to troubleshoot.
  • Verify if
    DDE Server Interface
     is enabled in FactoryTalk Linx Gateway.
  • Verify if DDE is turned on in clients. Take Excel (Microsoft 365) as an example.
    1. Open
      Excel
      .
    2. Select
      File
      >
      Options
      >
      Trust Center
       >
      Trust Center Settings
      >
      External Content
      .
    3. Select
      Enable Dynamic Data Exchange Server Lookup
       and
      Enable Dynamic Data Exchange Server Launch
      .
  • Verify if an available activation is used in FactoryTalk Linx Gateway.
  • Disable
    DDE Server Interface
    , click
    Apply
    , then enable
    DDE Server Interface
    ,
    and click
    Save.
  • Restart DDE clients.
  • Restart the computer.
  • Verify if there are any tag names using a format that matches an Excel cell reference. The tag name should not be the same as the Excel cell reference, for example, A1 or tag1. Otherwise, DDE will not work when reopening Excel.
  • Verify the tag names used to reference data in Excel use the correct format defined in FactoryTalk Linx Gateway.
  • Verify if there are multiple users are using the DDE function on one computer. For example, multiple users use RDS to access a server running FactoryTalk Linx Gateway serving DDE, or multiple users signs in to the same computer to use the DDE function. The DDE function only supports one user on one computer.
If you switch Windows users when you are using DDE, DDE may not work as intended. Sign out users and then sign in.
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