writing file to sharepoint in xls format

Hello,
So I used the microsoft authentication, sharepoint online connector and the excel writer node to write my output to my sharepoint file. The process succeeded but I dont know why the file format isnt xls although in the excel writer node configuration I chose xls as the format.

This is how the file shows up on my sharepoint page:
sharepoint

how do I fix this please

Hello @lamasewidan ,

welcome to Forum!

Did you added the .xls extension within the configuration of the file name?

Regards,
Dora

@dora_gcs
No I did not
should I?

Hi @lamasewidan ,

yes, please try it.
I am sure it will work!

Best