Assistance Required for FpSpread Initialization Error in IIS Environment

Assistance Required for FpSpread Initialization Error in IIS Environment

Posted by: hariharan.ramachandran on 22 August 2025, 7:37 am EST

• 

  hariharan.ramachandran

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  Posted 22 August 2025, 7:37 am EST

  We are currently utilizing FpSpread version 17.1.20241.0 in our application. Recently, while instantiating FpSpread with the following line of code:

  FpSpread objfpSpread = new FpSpread();

  we encountered an error stating: “Showing a modal dialog box or form when the application is not running in UserInteractive mode is not a valid operation. Specify the ServiceNotification or DefaultDesktopOnly style to display a notification from a service application.”

  This issue has arisen unexpectedly, as the code was functioning properly under the IIS environment until now.

  We have ensured that the proper license files,

  fp.deploy.gclicx

  and

  fp.dev.gclicx

  , are correctly embedded in the project.

  We would greatly appreciate any assistance in resolving this error, as it is currently hindering our ability to release the application to clients.

  Thank you for your support!

• 

  aastha.gupta

  

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  Posted 25 August 2025, 4:55 am EST

  Hi Hariharan,

  Thanks for reaching out to us.

  Since we need some confidential details to investigate this issue, we’ve created a new support ticket CAS-58874-X4J4X5. Please use the following link to track updates on this case: *https://developer.mescius.com/my-account/my-support/case/be160c2e-8281-f011-b4cc-7c1e525b4773

  We appreciate your understanding.

  Kind Regards,
  
  Aastha