UCWA client is disconnected because w3wp.exe crashes when you use clarity connect in Skype for Business Server


In a Microsoft Skype for Business Server 2019 or Skype for Business Server 2015 environment, you use a third-party call center application - Clarity Connect that's UCWA based, and agents sign in to the clarity agent. Because of the following UCWA exception, w3wp.exe crashes and agents sign out. This causes the disconnections from audio calls.

Log Name: Application

Source: .NET Runtime

Date: DateTime

Event ID: 1026

Task Category: None

Level: Error

Keywords: Classic

User: N/A

Computer: ComputerName


Application: w3wp.exe

Framework Version: v4.0.30319

Description: The process was terminated due to an unhandled exception.


To fix this issue, install one for the following updates:

Third-party information disclaimer

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

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