we've received an email with an excel sheet attachement (338KB large)
After we saved the attachments it is 0Kb.
When trying to open it straight away by double-click Excel comes up with the error:
The file format and extension of "name of the excel file.xls" don't match. The file could be corrupted or unsafe. unless you trust its source, don't open it.
Do you want to open it anyway? > Yes / No / Help
We've changed the extension to .xlsx - .xlsm
We know that the drive/folder has write permissions etc.
Any help, please.