Files have the same date but a different size

[4braKadabra]

Hello,
When synchronising "Copy new and updated files to the right folder" there are often warnings:

Files have the same date but a different size:
Date: 7/7/2023 7:58:59 PM Size: 15,904,256 <-
Date: 7/7/2023 7:58:59 PM Size: 15,903,744 ->


The files format is ".ppt"

Left side is NAS, Asustor AS6204T
Right side is Windows Server 2022 Standard


Such warnings occur quite frequently.

Can I fix it somehow ?

If such a warning occurs while the date is the same but the sizes are different, the file on the left should always be treated as correct.

[xCSxXenon]

The real problem is the file content is changing, seemingly on its own. I would figure that out and stop it from happening. I wonder if the NAS is adding info/metadata to its files since that is the bigger version of the file.

[fred_be]

FWIW I have noticed that MS Office (word, excel, etc) is making changes to my files when I open them, even without explicitly saving. The changes relate to certain metadata or links to other files (when those other files are moving, the link to them is auto-updated).
That results in file size changes, without changing the mod-date.

In my case, all those files are on Sharepoint, but I don' t know if that's necessary to get this behaviour.

You might have the same thing happening.

[therube]

I have noticed that MS Office (word, excel, etc) is making changes to my files when I open them, even without explicitly saving

Excel .xls files & File Content Compare