Applies To:
  • CitectSCADA 5.xx, 6.00
Summary:
CtOpen() call failed and I received an error code '274'. What is the cause to this?
 

Solution:
This error code indicates that the provided user name or password is incorrect. Please check the user details configured in your project. It is noted that the blank password is supported in CitectSCADA but not supported in CTAPI. If you try the blank password, you will receive error code '289'.
 
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