Powershell with excel interop is saving to some random file. Here are few lines:

$outputExcelFile = Join-Path -Path $outputExcelFolder -ChildPath "$($fileName).xlsx"

Write-Host "Saving file $outputExcelFile ..."

$outputExcel.SaveAs($outputExcelFile)

On my Windows 10 it is saving just fine. On another PC error is happening:

Saving file C:\files\myexcel.xlsx Microsoft Excel cannot access the file 'C:\files\8142AA10'. There are several possible reasons:

• The file name or path does not exist.
• The file is being used by another program.
• The workbook you are trying to save has the same name as a currently open workbook.

What is 8142AA10?!! You can see variable name to save holds C:\files\myexcel.xlsx.

Any suggestions?