azure blob 存储中的 XLSX 文件被下载为 zip 文件

Question

We have some files in our Azure blob storage - they are all xlsx files. When we download them via Azure portal (we navigate to the storage account, then to the container, and then select a file and download it) it downloads and saves as zip file.

If after downloading we change its extension to xlsx then Excel will recognize it and open without issues. However, something is forcing that extension to change from xlsx (as we see it in the container) to the.zip whilst it is downloaded.

The same happens when we access the files programmatically (via c# code) or generate a shared access signature.

What could it be and how to fix it?

Thanks!

Answer 1

my work around when accessing xlsx files programmatically with C#, is to manually add the mime type specifically for the xlsx file type as, they were one's giving me issues(pdf and pictures work fine), PS, I store filenames in my DB with a corresponding filename. ie

if (YourModel.FileName.EndsWith("xlsx"))
            {
                return File(YourModel.FileData, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
            }