Can't create Data Source Object - Class not registered - Error Message

[ALLSEBS01]

Hi all,

I keep getting the below error message - it's happening on around 5 workflows that I was previously able to run with no issues. I get someone else to run the workflow and it works fine for other people on the team - so I can't work out why it doesn't let me when I haven't changed anything.

Does anybody have any ideas?  

[Qiu · Accepted solution]

@ALLSEBS01 
It appears that it is about the .XLS File Format Deprecation and End of Life in Alteryx Designer

https://community.alteryx.com/t5/Engine-Works/XLS-File-Format-Deprecation-and-End-of-Life-in-Alteryx...