Yes, the problem is that all Office products in the file header also save the file creation time!
With NewFileTime, you can change the file time and date.
Have now only one solution ready, but this also works with all other Microsoft Office documents.
Step 1 of 3
Set the Windows system time to the desired date (creation time).
Read this: How to change the windows 8 / 10 and 8.1 local date and time?
Step 2 of 3
Create a new document that copies and saves content from the original to the new document. Close Powerpoint.
Step 3 of 3
Set the Windows system time back to the current date / time.
Please ... use always the latest version of NewFileTime!
About hidden data: ... Inspect documents for hidden data and personal information
FAQ 6: Updated on: January 24th 2018 09:47