I have over 150 XLS files and it used to be able to input into alteryx without any issue.
But this month it appears to be having this issue, where if I open the file manually thru excel, it prompt me this window. It still was able to open and read the file, just that it wasnt the usual format like the other file.

However if I open in alteryx, it prompt me this, and I cannot open the file.

Anyone encountered this issue?
I did my homework also, but the main issue now is alteryx wont be able to read it, left alone converting it to XLSX.
How To Input Excel Files That Have Encoding Issues - Alteryx Community