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Question

The underlying connection was closed. A connection that was expected to be kept alive was closed by the server.

  • September 25, 2026
  • 0 replies
  • 9 views

udgnhlh
Sidekick (Customer)
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Hi Experts,

We have encountered the following error for several users yesterday and today:

Error Message: "The underlying connection was closed: A connection that was expected to be kept alive was closed by the server."

Test Case:

  • IFS Applications 10
  • IEE Client
  • Occurs when opening PDF documents/reports

The issue is affecting multiple users today.

Could you please advise on the possible causes and recommended troubleshooting steps? In particular, we would appreciate guidance on:

  • Known IFS APP10 issues related to PDF generation/opening
  • Connection timeout settings
  • IIS, network, or SSL-related configurations that may cause this behavior
  • Relevant logs that should be reviewed for further diagnosis

Please let us know if any additional information is required.

Kind regards,

Udeni Gnanaweera