Create not-connecting-IBM-PComm.md

Author: NikosMoutzourakis

support/power-platform/power-automate/desktop-flows/not-connecting-IBM-PComm.md

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+---
+title: Unable to Connect to IBM PComm Session
+description: This article addresses the issue of being unable to connect to an IBM PComm session using the Open Terminal Session action with the HLLAPI provider.
+ms.custom: sap:Desktop flows
+ms.date: 03/07/2025
+ms.author: nimoutzo 
+author: nimoutzo
+---
+# Unable to Connect to IBM PComm Session
+
+This article addresses the issue of being unable to connect to an IBM PComm session using the Open Terminal Session action with the HLLAPI provider.
+
+## Symptoms
+
+When attempting to use the Open Terminal Session action with the HLLAPI provider to connect to the IBM PComm terminal emulator, the following error is encountered:
+```Exception of type 'Microsoft.Flow.RPA.Desktop.Modules.TerminalEmulation.Common.TerminalEmulationActionException' was thrown.: Microsoft.PowerPlatform.PowerAutomate.Desktop.Actions.SDK.ActionException: Error communicating with the emulator ---> Microsoft.Flow.RPA.Desktop.Modules.TerminalEmulation.Common.TerminalEmulationActionException: Exception of type 'Microsoft.Flow.RPA.Desktop.Modules.TerminalEmulation.Common.TerminalEmulationActionException' was thrown.
+   at Microsoft.Flow.RPA.Desktop.BridgeToHLLAPI.HLLAPIActionsImpl.<>c__DisplayClass16_0.<Open>b__0()
+   --- End of inner exception stack trace ---
+   at Microsoft.Flow.RPA.Desktop.Modules.TerminalEmulation.Actions.OpenTerminalSession.Execute(ActionContext context)
+   at Microsoft.Flow.RPA.Desktop.Robin.Engine.Execution.ActionRunner.Run(IActionStatement statement, Dictionary`2 inputArguments, Dictionary`2 outputArguments)
+```
+
+## Applicable Versions
+All PAD versions
+
+## Modes
+
+- Unattended
+- Attended
+- Console/Designer
+
+## Root Cause
+The terminal emulator requires access to HLLAPI DLLs, which are not supported.
+
+## Workaround
+To resolve this issue, download and install the 64-bit version of IBM PComm.
+
+[!INCLUDE [Third-party disclaimer](../../../includes/third-party-disclaimer.md)]