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Alteryx Designer Knowledge Base

Definitive answers from Designer experts.

Unhandled Exception After Adding Browses to All Outputs

Created on



In Alteryx Designer 2019.1.4, after adding Browse tools to all of the output anchors of a tool using Right-click > Add All Browses OR Ctrl + Shift + B, running the workflow returns an Unhandled Exception error. The workflow runs indefinitely until Designer is canceled from Windows Task Manager.


The full error is as follows:


An Unhandled Exception occurred.

A previous action may not have completed successfully.

Click OK to send the development team the error log so that we can fix this error in a subsequent release.





The workflow runs indefinitely and cannot be canceled. Closing Designer results in the following dialog:



You will need to exit Designer by ending the process in Windows Task Manager (Ctrl + Alt + Delete).




  • Alteryx Designer
    • Version 2019.1.4




Confirm your version of Alteryx Designer by navigating to Help > About. If you are using version 2019.1.4, continue. If you are not, your error was likely caused by a different issue. Please open a ticket with customer support through the case portal.




Add All Browses to a tool by Right-click > Add All Browses OR Ctrl + Shift + B, then run the workflow.




The unhandled exception error is returned after the workflow is run. 




In Designer 2019.1.4, there is a known issue where adding multiple browses to a tool simultaneously causes Designer to crash when the workflow is run. This is because when the Browse tools are added, the configuration is not finalized for each tool. A fix is being developed. In the meantime, please see the following workarounds.




Upgrade to the latest release of Alteryx Designer (2019.1.6).


Workaround A


  1. Add all Browse tools one by one.


Workaround B


  1. After adding Browse tools, save the workflow before running it.


Workaround C


  1. Add All Browses with Right-click > Add All Browses OR Ctrl + Shift + B
  2. Apply the configuration to each Browse tool individually.
    1. Click each added Browse tool to open the Configuration window.
    2. Click Apply (the check-mark in the bottom left corner of the Configuration window)


    3. Repeat for each added Browse tool.



Glad I found this article. At least I got a RAM upgrade while dealing with this bug.


Is there an ETA on when a fix for this issue may be available? 


This bug is fixed in our latest stable release.


Awesome, thanks @JPoz!