Guides
Batch convert .xls to .xlsx
Ran into an issue today where a colleague needed to convert a bunch of .xls files in subfolders to .xlsx. Found a script as follows on superuser.com and slightly modified it to save in the source folder: Get-ChildItem -Recurse *.xls | ForEach-Object {&"C:\Program Files\LibreOffice\program\soffice.