# What could be wrong when using Import for an XLSX?

I am using MMA 11.2.0.0 on Win7X64.

Import["combined_analysis.xlsx", {"sheet1"}]


Import::noelem: The Import element "sheet1" is not present when importing as XLSX.

In the xlsx file, I DID rename all sheets. But for testing purpose, I renamed the sheet that I want to import to various names. None worked.

What could be wrong?????

Import["combined_analysis.xlsx"]


Does work fine. Then I can select the data using

Import["combined_analysis.xlsx"][[4]]


for example. But what's wrong using the sheet name?